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Class 7 Maths — Multiplying and dividing integers

Multiply and divide positive and negative whole numbers, and get the sign right every time.

Name: ________________________

Before you start

This line runs from twelve below zero to twelve above it, in twos. Move along it and see how the two halves mirror each other.

-12-60612

Every step to the right adds 2 and every step to the left takes 2 away, so multiplying by a negative is the same jumps walked the other way. That is the whole sign rule, in one picture.

  1. 1.-6 × 4 = ?

  2. 2.-45 ÷ (-5) = ?

  3. 3.-36 ÷ 9 = ?

  4. 4.-7 × (-3) = ?

  5. 5.-3 × (-4) × (-2) = ?

  6. 6.Match each calculation to its answer.

    • -6 × 5
    • -6 × (-5)
    • -42 ÷ 7
    • -42 ÷ (-6)
    • 9 × (-2)
    • 7
    • -30
    • -18
    • -6
    • 30

  7. 7.The product of two integers is -48. One of them is 6. What is the other?

  8. 8.Tap the integer that is exactly halfway between -8 and 2.

    Mark the line with an X.

    -10-9-8-7-6-5-4-3-2-1012345678910

Answer key — Class 7 Maths — Multiplying and dividing integers

  1. 1. -24
  2. 2. 9
  3. 3. -4
  4. 4. 21
  5. 5. -24
  6. 6. -6 × 5 → -30; -6 × (-5) → 30; -42 ÷ 7 → -6; -42 ÷ (-6) → 7; 9 × (-2) → -18
  7. 7. -8
  8. 8. -3