Grade 5 Math

1
Solving Equations

• Grade 5 Math

2
Definitions

• Equation
• A mathematical sentence stating that 2
  expressions are equal.
• 12 3 9
• 8 4 12

3
Definitions

• Equals Sign ()
• Means that the amount is the same on both sides.
• 4 2 6
• 5 2 3

4
An equation is like a balance scale. everything
must be equal on both sides.

10
5 5
5
When the amounts are equal on both sides it is an
equation.
12

6 6
6
When the amounts are unequal on both sides it is
an inequality.

8
2 2
7
Unknowns
8
Are these expressions or equations?
equation

• 11 - n 5
• m 4 17
• N 4
• 12 3 p
• 3 v 13
• y 6

equation
expression
equation
equation
expression
9
How to Solve Equations

• Inverse operation
• the opposite operation used to undo the first.
• 4 3 7 7 4 3
• 6 x 6 36 36 / 6 6

10
How to solve an addition equation

• Use the inverse operation for addition which is
  subtraction
• m 8 12
• - 8 -8
• m 4

11
How to solve a subtraction equation

• Use the inverse operation for subtraction which
  is addition
• m - 3 5
• 3 3
• m 8

12
Solve these equations using the inverse operations
3

• n 4 7
• n 5 4
• n 4 17
• n 6 13
• n 7 15
• n 8 17

9
13
19
8
9