Grade 7 · Math · Unit 2 of 12
Multiply & Divide Integers
Sign rules, facts and BEDMAS
What your child practises
Keeping multiplication and division facts fluent, applying the sign rules for negative numbers, and evaluating expressions in the right order (brackets, then × and ÷, then + and −).
NWT Curriculum learning standard: Multiplication and division facts to 100; operations with integers: multiplication, division and order of operations
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
The temperature dropped 5°C every hour for 5 hours. What integer shows the total change in temperature?
answer box°C
-25 °C
Hint: A drop is negative, so multiply: 5 × (-5) = -25.
Question 2
What number goes in the box?
(-6) × = -24
answer box
4
Hint: Divide: -24 ÷ (-6) = 4. Check: (-6) × 4 = -24.
Question 3
What is the value of -42 ÷ 6 − 2?
-42 ÷ 6 − 2
- -5
- -9
- -8
- 9
-9
Hint: Divide first: -42 ÷ 6 = -7. Then -7 − 2 = -9.
Question 4
What is -15 ÷ (-5)?
-15 ÷ (-5) = ?
- 4
- 3
- -3
- 2
3
Hint: Use the fact 5 × 3 = 15. Same signs give a positive answer, so the answer is 3.
Question 5
What is 3 × (-9)?
3 × (-9) = ?
answer box
-27
Hint: 3 × 9 = 27. Different signs give a negative product, so the answer is -27.
Question 6
Without multiplying it out, is this product positive or negative? (-7) × (-7) × (-2) × 6
- Positive
- Negative
Negative
Hint: Count the negative factors: there are 3. An even number of negatives gives a positive product; an odd number gives a negative product.