Mental Math

1
Mental Math
Set 2
2
Mental Math 1

• 7.7 ? 100
• 40 x 300
• 500 30 6000 2
• 6 8
• 156 8
• 200 400 53
• 3 x 10 6 x 1000 2 x 1
• 46.45 rounded to the nearest tenth
• Five hundred and four thousandths
• Which is larger 98.9 or 98.199

3
Mental Math 1

• 7.7 ? 100 0.077
• 40 x 300 12 000
• 500 30 6000 2 6532
• 6 8 14
• 156 8 164
• 200 400 53 653
• 3 x 10 6 x 1000 2 x 1 6032
• 46.45 rounded to the nearest tenth 46.5
• Five hundred and four thousandths 500.004
• Which is larger 98.9 or 98.199 98.9

4
Mental Math 2

• 822.4 ? 100
• 50 x 30
• 5 800 60 2000
• 7 5
• 335 7
• 2 x 3.99
• 3 x 100 6 x 10 2 x 1000
• 8.4488 rounded to the nearest hundredth
• ten and thirteen thousandths

5
Mental Math 2

• 822.4 ? 100 8.224
• 50 x 30 1500
• 5 800 60 2000 2865
• 7 5 12
• 335 7 342
• 2 x 3.99 7.98
• 3 x 100 6 x 10 2 x 1000 2360
• 8.4488 rounded to the nearest hundredth 8.45
• ten and thirteen thousandths 10.013
• 1.04

1
6
Mental Math 3

• 105 cm ____ m
• 2 L _____ mL
• 5000 m _____ km
• 3.4 mm _____ cm
• 90 mL _____ L
• 600 g _____ kg
• 1 mg _____ g
• 3 km _____ m
• 0.01 g _____ mg
• 20 m _____ cm

7
Mental Math 3

• 105 cm 1.05 m
• 2 L 2000 mL
• 5000 m 5 km
• 3.4 mm 0.34 cm
• 90 mL 0.09 L
• 600 g 0.6 kg
• 1 mg 0.001 g
• 3 km 3000 m
• 0.01 g 10 mg
• 20 m 2000 cm

8
Mental Math 4

• 6 L _____ mL
• 3700 m _____km and _____m
• 59 km _____ m
• 3.4 cm _____mm
• 345 mL _____L
• 69 mg _____ g
• 1112 g _____kg
• 9 km _____ m
• 0.08 g _____ mg
• 2160 m _____ km and _____m

9
Mental Math 4

• 6 L 6000 mL
• 3700 m 3 km and 700 m
• 59 km 59 000 m
• 3.4 cm 34 mm
• 345 mL 0.345 L
• 69 mg 0.069 g
• 1112 g 1.112 kg
• 9 km 9000 m
• 0.08 g 80 mg
• 2160 m 2 km and 160 m

10
Mental Math 5

• 3900 mm _____ m
• 4321 m _____ km and _____ m
• 5900 mL _____ L and _____ mL
• 47 cm _____ mm
• 805 mL _____ L
• 6 g _____ mg
• 4 kg _____ g
• 9 km _____ hm
• 8 g _____ dg
• 2002 m _____ km and _____ m

11
Mental Math 5

• 3900 mm 3.9 m
• 4321 m 4 km and 321 m
• 5900 mL 5 L and 900 mL
• 47 cm 470 mm
• 805 mL 0.805 L
• 6 g 6000 mg
• 4 kg 4000 g
• 9 km 90 hm
• 8 g 80 dg
• 2002 m 2 km and 2 m

12
Mental Math 6

• Have 10, spend 1.25
• Have 10, spend 3.45
• Have 5, spend 2.30
• Have 20, spend 10.02
• Have 5, spend 2.89
• Have 20, spend 14.37
• Have 20, spend 18.50
• Have 10, spend 3.90
• Have 5, spend 0.78
• Have 10, spend 8.10

13
Mental Math 6

• Have10, spend 1.25 8.75
• Have 10, spend 3.45 6.55
• Have 5, spend 2.30 2.70
• Have 20, spend 10.02 9.98
• Have 5, spend 2.89 2.11
• Have 20, spend 14.37 5.63
• Have 20, spend 18.50 1.50
• Have 10, spend 3.90 6.10
• Have 5, spend 0.78 4.22
• Have 10, spend 8.10 1.90

14
Mental Math 7

• Have 10, spend 2.75
• Have 10, spend 3.55
• Have 5, spend 3.90
• Have 20, spend 11.97
• Have 5, spend 2.75
• Have 20, spend 15.43
• Have 20, spend 16.50
• Have 10, spend 1.70
• Have 5, spend 0.63
• Have 10, spend 7.20

15
Mental Math 7

• Have 10, spend 2.75 7.25
• Have 10, spend 3.55 6.45
• Have 5, spend 3.90 1.10
• Have 20, spend 11.97 8.03
• Have 5, spend 2.75 2.25
• Have 20, spend 15.43 4.57
• Have 20, spend 16.50 3.50
• Have 10, spend 1.70 8.30
• Have 5, spend 0.63 4.37
• Have 10, spend 7.20 2.80

16
Mental Math 8

• Have 10, spend 2.80
• Have 10, spend 5.35
• Have 5, spend 1.40
• Have 20, spend 13.87
• Have 5, spend 2.75
• Have 20, spend 15.33
• Have 20, spend 17.50
• Have 10, spend 4.45
• Have 5, spend 0.71
• Have 10, spend 8.20

17
Mental Math 8

• Have 10, spend 2.80 7.20
• Have 10, spend 5.35 4.65
• Have 5, spend 1.40 3.60
• Have 20, spend 13.87 6.13
• Have 5, spend 2.75 2.25
• Have 20, spend 15.33 4.67
• Have 20, spend 17.50 2.50
• Have 10, spend 4.45 5.55
• Have 5, spend 0.71 4.29
• Have 10, spend 8.20 1.80

18
Mental Math 9

• Have 10, spend 3.35
• Have 10, spend 7.40
• Have 5, spend 0.84
• Have 20, spend 18.99
• Have 5, spend 2.25
• Have 20, spend 16.29
• Have 20, spend 18.50
• Have 10, spend 4.95
• Have 5, spend 0.30
• Have 10, spend 6.70

19
Mental Math 9

• Have 10, spend 3.35 6.65
• Have 10, spend 7.40 2.60
• Have 5, spend 0.84 4.16
• Have 20, spend 18.99 1.01
• Have 5, spend 2.25 2.75
• Have 20, spend 16.29 3.71
• Have 20, spend 18.50 1.50
• Have 10, spend 4.95 5.05
• Have 5, spend 0.30 4.70
• Have 10, spend 6.70 3.30

20
Mental Math 10

• Have 10, spend 8.30
• Have 10, spend 1.41
• Have 5, spend 0.34
• 3.99 ? 10.00
• 5.2 ? 10
• Have 20, spend 11.50
• Have 20, spend 7.68
• 0.74 ? 5
• ? 4.085 5
• 17.10 ? 20

21
Mental Math 10

• Have 10, spend 8.30 1.70
• Have 10, spend 1.41 8.59
• Have 5, spend 0.34 4.66
• 3.99 6.01 10.00
• 5.2 4.8 10
• Have 20, spend 11.50 8.50
• Have 20, spend 7.68 12.32
• 0.74 4.26 5
• 0.915 4.085 5
• 17.1 2.9 20

22
Mental Math 11

• Have 10, spend 5.15
• Have 10, spend 3.57
• Have 5, spend 1.92
• 4.61 ? 10.00
• 3.7 ? 10
• Have 20, spend 12.75
• Have 20, spend 9.50
• 0.31 ? 1
• ? 2.425 5
• 15.5 ? 20

23
Mental Math 11

• Have 10, spend 5.15 4.85
• Have 10, spend 3.57 6.43
• Have 5, spend 1.92 3.08
• 4.61 5.39 10.00
• 3.7 6.3 10
• Have 20, spend 12.75 7.25
• Have 20, spend 9.50 10.50
• 0.31 0.69 1
• 2.575 2.425 5
• 15.5 4.5 20

24
Mental Math 12

• 20 14
• 55 43
• 38 26
• 65 27
• 78 135
• 23 59
• 48 24
• 45 48
• 36 47
• 263 43

25
Mental Math 12

• 20 14 34
• 55 43 98
• 38 26 64
• 65 27 92
• 78 135 213
• 23 59 82
• 48 24 72
• 45 48 93
• 36 47 83
• 263 43 306

26
Mental Math 13

• 46 27
• 35 48
• 18 73
• 94 26
• 82 225
• 77 19
• 49 49
• 23 45
• 32 41 60
• 227 63

27
Mental Math 13

• 46 27 73
• 35 48 83
• 18 73 91
• 94 26 120
• 82 225 307
• 77 19 96
• 49 49 98
• 23 45 68
• 32 41 60 133
• 227 63 290

28
Mental Math 14

• 30 25 70
• 35 40 60 20
• 50 95 50
• 10 75 50 50 25
• 90 25 75 10
• 85 25 25 15
• 20 80 55 30 45
• 35 20 90 65
• 20 40 60 180
• 300 700 600

29
Mental Math 14

• 30 25 70 125
• 35 40 60 20 155
• 50 95 50 195
• 10 75 50 50 25 210
• 90 25 75 10 200
• 85 25 25 15 150
• 20 80 55 30 45 230
• 35 20 90 65 210
• 20 40 60 180 300
• 300 700 600 1600

30
Mental Math 15

• 50 25 75
• 35 70 30 65 10
• 20 50 150
• 70 10 30 60 40
• 90 55 45 10 80
• 25 25 25 50
• 20 80 55 30 45
• 100 200 900 65
• 200 50 130 50
• 200 70 800 30

31
Mental Math 15

• 50 25 75 150
• 35 70 30 65 10 210
• 20 50 150 220
• 70 10 30 60 40 210
• 90 55 45 10 80 280
• 25 25 25 50 125
• 20 80 55 30 45 230
• 100 200 900 65 1265
• 200 50 130 50 430
• 200 70 800 30 1100

32
Mental Math 16

• 29 75
• 56 52
• 25 54
• 175 24
• 90 55
• 26 99
• 98 79
• 125 77
• 258 50
• 215 90

33
Mental Math 16

• 29 75 104
• 56 52 108
• 25 54 79
• 175 24 199
• 90 55 145
• 26 99 125
• 98 79 177
• 125 77 202
• 258 50 308
• 215 90 305

34
Mental Math 17

• 28 75
• 225 76
• 25 98
• 198 28
• 390 38
• 87 198
• 99 209
• 175 27
• 325 79
• 50 158

35
Mental Math 17

• 28 75 103
• 225 76 301
• 25 98 123
• 198 28 226
• 390 38 428
• 87 198 285
• 99 209 308
• 175 27 202
• 325 79 404
• 50 158 208

36
Mental Math 18

• 2 x 75 x 5
• 2 x 7 x 5 x 5 x 2
• 25 x 9 x 4
• 10 x 16 x 2
• 5 x 20 x 38
• 8 x 4 x 5
• 97 x 2 x 5
• 500 x 33 x 2
• 25 x 2 x 40
• 50 x 56 x 2

37
Mental Math 18

• 2 x 75 x 5 750
• 2 x 7 x 5 x 5 x 2 700
• 25 x 9 x 4 900
• 10 x 16 x 2 320
• 5 x 20 x 38 380
• 8 x 4 x 5 160
• 97 x 2 x 5 970
• 500 x 33 x 2 33 000
• 25 x 2 x 40 2000
• 50 x 56 x 2 5600

38
Mental Math 19

• 20 x 5 x 8
• 25 x 7 x 4
• 2 x 93 x 5
• 10 x 32 x 2
• 5 x 2 x 86
• 48 x 2 x 50
• 9 x 2 x 5 x 6
• 500 x 3 x 2 x 8
• 25 x 7 x 4 x 8
• 50 x 5 x 2 x 2 x 35

39
Mental Math 19

• 20 x 5 x 8 800
• 25 x 7 x 4 700
• 2 x 93 x 5 930
• 10 x 32 x 2 640
• 5 x 2 x 86 860
• 48 x 2 x 50 4800
• 9 x 2 x 5 x 6 540
• 500 x 3 x 2 x 8 24000
• 25 x 7 x 4 x 8 5600
• 50 x 5 x 2 x 2 x 35 35 000

40
Mental Math 20

• 800 ? 20
• 300 ? 50
• 9000 ? 30
• 630 ? 90
• 4200 ? 60
• 7200 ? 800
• 2700 ? 90
• 200 ? 50
• 770 ? 70
• 3200 ? 800

41
Mental Math 20

• 800 ? 20 40
• 300 ? 50 6
• 9000 ? 30 300
• 630 ? 90 7
• 4200 ? 60 70
• 7200 ? 800 9
• 2700 ? 90 30
• 2000 ? 50 40
• 770 ? 70 11
• 3200 ? 800 4

42
Mental Math 21

• 900 ? 30
• 3600 ? 60
• 2400 ? 30
• 6400 ? 80
• 3600 ? 600
• 35 000 ? 700
• 8000 ? 400
• 4500 ? 50
• 1800 ? 30
• 5600 ? 800

43
Mental Math 21

• 900 ? 30 30
• 3600 ? 60 60
• 2400 ? 30 80
• 6400 ? 80 80
• 3600 ? 600 6
• 35 000 ? 700 50
• 8000 ? 400 20
• 4500 ? 50 90
• 1800 ? 30 60
• 5600 ? 800 7

44
Mental Math 22

• 480 ? 6
• 3500 ? 70
• 3000 ? 50
• 18 000 ? 60
• 600 ? 60
• 16 000 ? 400
• 8100 ? 900
• 6300 ? 90
• 1200 ? 40
• 3200 ? 800

45
Mental Math 22

• 480 ? 6 80
• 3500 ? 70 50
• 3000 ? 50 60
• 18 000 ? 60 300
• 600 ? 60 10
• 16 000 ? 400 40
• 8100 ? 900 9
• 6300 ? 90 70
• 1200 ? 40 30
• 3200 ? 800 4

46
Mental Math 23

• 228 ? 2
• 255 ? 5
• 339 ? 3
• 168 ? 4
• 300 ? 50
• 726 ? 6
• 990 ? 90
• 200 ? 5
• 714 ? 7
• 342 ? 3

47
Mental Math 23

• 228 ? 2 114
• 255 ? 5 51
• 339 ? 3 113
• 168 ? 4 42
• 300 ? 50 6
• 726 ? 6 121
• 990 ? 90 11
• 200 ? 5 40
• 714 ? 7 102
• 342 ? 3 114

48
Mental Math 24

• 530 ? 5
• 369 ? 3
• 322 ? 2
• 464 ? 4
• 600 ? 30
• 816 ? 8
• 8000 ? 40
• 260 ? 5
• 147 ? 7
• 189 ? 9

49
Mental Math 24

• 530 ? 5 106
• 369 ? 3 123
• 322 ? 2 161
• 464 ? 4 116
• 600 ? 30 20
• 816 ? 8 102
• 8000 ? 40 200
• 260 ? 5 52
• 147 ? 7 21
• 189 ? 9 21

50
Mental Math 25

• 125 35
• 2000 50 400 4
• 4.2 3 0.8
• 23
• 10.00 - 3.85
• 65 ? 100
• 90 x 50
• 135 ? 5
• 100 x 0 .15
• 60

51
Mental Math 25

• 125 35 160
• 2000 50 400 4 2454
• 4.2 3 0.8 8
• 23 8
• 10.00 - 3.85 6.15
• 65 35 100
• 90 x 50 4500
• 135 ? 5 27
• 100 x 0.15 15
• 60 1

52
Mental Math 26

• 375 45
• 200 60 140
• 31
• 2.7 3 1.3
• You give 5 for a purchase costing 2.55. What
  is your change?
• ? 275 1000
• 2800 in scientific notation is
• 284 ? 2
• 2.9 x 100
• 38.9 ? 10

53
Mental Math 26

• 375 45 420
• 200 60 140 400
• 31 3
• 2.7 3 1.3 7
• You give 5 for a purchase costing 2.55. What
  is your change? 2.45
• 725 275 1000
• 2800 in scientific notation is 2.8 x 103
• 284 ? 2 142
• 2.9 x 100 290
• 38.9 ? 10 3.89

54
Mental Math 27

• 530 28
• 2100 500 230
• 3.5 3 1.5
• 234.5 in scientific notation
• You give 5 for a purchase costing 3.30. What
  is your change?
• 300 300 ? 1000
• 40 x 500
• 396 ? 3
• 5.3 m equals ___ cm
• 82.9 ? 10

55
Mental Math 27

• 530 28 558
• 2100 500 230 2830
• 3.5 3 1.5 8
• 234.5 in scientific notation 2.345 x 102
• You give 5 for a purchase costing 3.30. What
  is your change? 1.70
• 300 300 400 1000
• 40 x 500 20 000
• 396 ? 3 132
• 5.3 m equals 530 cm
• 82.9 ? 10 8.29

56
Mental Math 28

• 200 6000 3 70
• 50 3100 700
• 32
• 9 40.3 0.5
• 10.00 - 6.75
• 35 25 ? 100
• 3000 x 20
• 350 ? 5
• 237 ? 100

57
Mental Math 28

• 200 6000 3 70 6273
• 50 3100 700 3850
• 32 9
• 9 40.3 0.5 49.8
• 10.00 - 6.75 3.25
• 35 25 40 100
• 3000 x 20 60 000
• 350 ? 5 70
• 237 ? 100 2.37
• 2.304

58
Mental Math 29

• 285 65
• 4000 7 500 30
• 6.3 0.4 1.7
• 33
• 20.00 - 11.95
• ? 55 200
• 3 x 700
• 1000 ? 50
• 100 x 0.65
• 636 ? 3

59
Mental Math 29

• 285 65 350
• 4000 7 500 30 4537
• 6.3 0.4 1.7 8.4
• 33 27
• 20.00 - 11.95 8.05
• 145 55 200
• 3 x 700 2100
• 1000 ? 50 20
• 100 x 0.65 65
• 636 ? 3 212

60
Mental Math 30

• 75 380
• 30
• 4.3 3.2 1.8
• 1000 - 540
• 100.00 - 59.00
• ? 85 200
• 200 x 40
• 1000 ? 20
• 100 x 4.5
• 842 ? 2

61
Mental Math 30

• 75 380 455
• 30 1
• 4.3 3.2 1.8 9.3
• 1000 - 540 460
• 100.00 - 59.00 41.00
• 115 85 200
• 200 x 40 8000
• 1000 ? 20 50
• 100 x 4.5 450
• 842 ? 2 421

62
Mental Math 31

• 125 35 75
• 24
• 4.5 3.5 0.8
• 350
• 10.00 - 3.80
• 65 ? 300
• 90 x 30
• 15cm equals __dm
• 1000 x 0.15
• 560 ? 5

63
Mental Math 31

• 125 35 75 235
• 24 16
• 4.5 3.5 0.8 8.8
• 350 1
• 10.00 - 3.80 6.20
• 65 235 300
• 90 x 30 2700
• 15cm equals 1.5 dm
• 1000 x 0.15 150
• 560 ? 5 112

64
Mental Math 32

• 250 125
• 8m equals ___dm
• 2.3 5.8 1.7
• 51
• 20.00 - 6.99
• 95 ? 300
• 500 x 70
• 550 ? 5
• 10 x 1 .33
• 361.1 ? 100

65
Mental Math 32

• 250 125 375
• 8m equals 80 dm
• 2.3 5.8 1.7 9.8
• 51 5
• 20.00 - 6.99 13.01
• 95 205 300
• 500 x 70 35 000
• 550 ? 5 110
• 10 x 1 .33 13.3
• 361.1 ? 100 3.611

66
Mental Math 33

• 8 410 000 in scientific notation
• 80
• 5.50 10 2.30
• 10.3 4.6 0.4
• 10.00 - 2.10
• 350 500 ? 1000
• 600 x 3
• 446 ? 4
• 2.11 x 1000
• 762.2 ? 100

67
Mental Math 33

• 8 410 000 in scientific notation 8.41 x 106
• 80 1
• 5.50 10 2.30 17.80
• 10.3 4.6 0.4 15.3
• 10.00 - 2.10 7.90
• 350 500 150 1000
• 600 x 3 1800
• 446 ? 4 111 R2
• 2.11 x 1000 2110
• 762.2 ? 100 7.622

68
Mental Math 34

• 355.5 in scientific notation
• 90 km equals ____ m
• 4.1 3.6 1.9
• 1000 230
• 20.00 - 9.90
• 180 ? 500
• 500 x 20
• 559 ? 5
• 10 x 27.3
• 590.1 ? 100

69
Mental Math 34

• 355.5 in scientific notation 3.555 x 102
• 90km equals 90 000m
• 4.1 3.6 1.9 9.6
• 1000 230 770
• 20.00 - 9.90 10.10
• 180 320 500
• 500 x 20 10 000
• 559 ? 5 111 R4
• 10 x 27.3 273
• 590.1 ? 100 5.901

70
Mental Math 35

• If 1, then
• 530 000 in scientific notation
• 7.95m equals ____cm
• 4.3 2.5 1.7
• 1000 440
• You give 10.00 for a purchase costing 6.92.
  What is your change?
• ? 275 25 1000
• 672 ? 6
• 769.1 ? 10
• 3.4 x 102

71
Mental Math 35

• If 1, then 12.3
• 530 000 in scientific notation 5.3 x 105
• 7.95m equals 795cm
• 4.3 2.5 1.7 8.5
• 1000 440 560
• You give 10.00 for a purchase costing 6.92.
  What is your change? 3.08
• 700 275 25 1000
• 672 ? 6 112
• 769.1 ? 10 76.91
• 3.4 x 102 340

72
Mental Math 36

• If 1, then
• 385 000
• 5.1 5.1 7.3
• 9 40.3 0.5
• 10.00 - 6.75
• 35 25 ? 100
• 3000 x 20
• 350 ? 5
• 4.2 x 1000
• 237 ? 10

73
Mental Math 36

• If 1, then 2.3
• 385 000 3.85 x 105
• 5.1 5.1 7.3 17.5
• 9 40.3 0.5 49.8
• 10.00 - 6.75 3.25
• 35 25 40 100
• 3000 x 20 60 000
• 350 ? 5 70
• 4.2 x 1000 4200
• 237 ? 10 23.7

74
Mental Math 37

• Two squared added to three squared
• 2L equals ___ mL
• 1.5 1.5 1.5 1.6
• 3100 200 540
• You give 5 for a purchase costing 2.55. What
  is your change?
• ? 275 1000
• 200 x 80
• 384 ? 2
• 2.9 x 100
• 37 ? 10

75
Mental Math 37

• Two squared added to three squared 13
• 2L equals 2000 mL
• The difference of 52 and 22
• 3100 200 540 3840
• You give 5 for a purchase costing 2.55. What
  is your change? 2.45
• 725 275 1000
• 200 x 80 16 000
• 384 ? 2 192
• 2.9 x 100 290
• 37 ? 10 3.7

76
Mental Math 38

• 53 dam ____ m
• 2 x 103
• The difference of 52 and 22
• 2 5.1 1.8
• You give 5 for a purchase costing 3.30. What
  is your change?
• 300 199 ? 1000
• 40 x 500
• 396 ? 3
• 5.3 x 100
• 82 ? 10

77
Mental Math 38

• 53 dam 530 m
• 2 x 103 2000
• The difference of 52 and 22 21
• 2 5.1 1.8 8.9
• You give 5 for a purchase costing 3.30. What
  is your change? 1.70
• 300 199 501 1000
• 40 x 500 20 000
• 396 ? 3 132
• 5.3 x 100 530
• 82 ? 10 8.2

78
Mental Math 39

• 210 163
• 5000 660 1000
• 5.5 5.5 5.5
• 2.9 4.4 0.6
• You give 10 for a purchase costing 5.99. What
  is your change?
• 250 400 ? 1000
• 50 x 60
• 784 ? 7
• 47.3 x 10
• 2444 ? 100

79
Mental Math 39

• 210 163 373
• 5000 660 1000 6660
• 5.5 5.5 5.5 16.5
• 2.9 4.4 0.6 7.9
• You give 10 for a purchase costing 5.99. What
  is your change? 4.01
• 250 400 350 1000
• 50 x 60 3000
• 784 ? 7 112
• 47.3 x 10 473
• 2444 ? 100 24.44

80
Mental Math 40

• 3200 543
• 30 7000 420
• 10 5.8 3.2
• 8.9 4.8
• You give 20 for a purchase costing 1.90 What is
  your change?
• 750 200 ? 1000
• 90 x 20
• 575 ? 5
• 0.633 x 100
• 71.4 ? 10

81
Mental Math 40

• 3200 543 3743
• 30 7000 420 7450
• 10 5.8 3.2 19
• 8.9 4.8 4.1
• You give 20 for a purchase costing 1.90 What is
  your change? 18.10
• 750 200 50 1000
• 90 x 20 1800
• 575 ? 5 115
• 0.633 x 100 63.3
• 71.4 ? 10 7.14