Writing and solving addition & subtraction equations

Write as an equation: a number b increased by 3 is 7

• b - 3 = 7

• b + 3 = 7

• 7b = 3

• 3b = 7

Solve the equation: y + 3 = 8

• y = 5

• y = 6

• y = 7

• y = 8

When solving 234 + N =389, what operation would you use to find the answer

• multiplication
• addition
• subtraction
• division

Which of the following is an equation?

• 4x - 7
• 3 - 7t
• 7x = 49
• 43x - 9

Translate:
Twelve less than a number

• 12 - x
• x - 12
• 12x
• x + 12

To solve algebraic equations we use ____________ operations.

• inverse/opposite

• correct

• math

• the order of

Write as an equation: 9 less than a number r is 15

• 9 + r = 15

• 9 - r = 15

• 15/9 = r

• r - 9 = 15

Sum means...

• addition

• subtraction

• multiplication

• division

Increased means...

• addition

• subtraction

• multiplication

• division

Difference means...

• addition

• subtraction

• multiplication

• division