Y9 Booster

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Y9 Booster

• Lesson1

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Place value chart M1.1
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Write down the number five point seven. Multiply
the number by 10. Record your answer.
Explain to a partner how you arrived at your
answer.
What has happened to the digits?
The decimal point does not move!! The digits move
one place to the left.
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As the following numbers appear multiply them by
10.
1.92
0.638
6.75
12.82
1.4
As the numbers appear multiply by 100.
0.67
16.8
2.5
8.324
1.56
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What does 10² mean?
What does 10³ mean?
How do you write 10 000 as a power of 10?
How do you write 10 as a power of 10?
How do you write 1 as a power of 10?
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0.1 10¹ 0.1
1 10º 1
10 10¹ 10
10 x 10 10² 100
10 x 10 x 10 10³ 1 000
How can you tell what power of ten it is by
looking at the number? Give another example and
explain your working.
What do you think 0.1 is as a power of 10?
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10¹ 0.1 10² 0.01
What is 6.3 x 10² ?
What is 4.56 x10³ ?
What is 63.2 x 10¹ ?
What is 6.1 x 10² ?
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What is 34.5 10² ?
What is 2.34 10¹ ?
What is 14.87 10º ?
What power of 10 can you multiply a number by and
leave the number unchanged?
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0.57 x 100 57 0.57 0.01 57
Explain why the above is true.
Give the division sum with the same answer as
this multiplication.
6.24 x 100 624
6.24 ? 624
Give the multiplication sum with the same answer
as this division.
0.4 10² 40
0.4 x ? 40
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Place value spider diagram M1.2
Discuss with a partner why these answers are
true. Consider other solutions, using digits 4, 0
and 1 only.
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Place value target board M1.3
If I divide a number by 0.1 and then by 0.1 again
my answer is 0.03. What number did I start with?
Think of a question for which the answer is on
the target board. Ask a partner to see if they
can answer your question?

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Thank you for your attention