Grade 6 Maths Review

Positive or Negative?

100

Calculate: −14 + 8

−6

200

Calculate: 9 − (−7)

16

300

Calculate: −8 × 6

−48

400

Calculate: −72 ÷ (−9)

8

500

Calculate: −15 + 7 − 12

−20

LCM and HCF Detectives

100

Find the HCF of 12 and 20.

4

200

Find the LCM of 4 and 10.

20

300

Find the HCF of 36 and 54.

18

400

Find the LCM of 15 and 20.

60

500

Two bells ring together at 10:00 a.m. One rings every 9 minutes and the other every 12 minutes. After how many minutes will they next ring together?

36 minutes. They will ring together at 10:36 a.m.

Root Challenge

100

Find the square root of 64.

8

200

Find ∛125.

5

300

Find √361.

19

400

Calculate: √169 + ∛512

13 + 8 = 21

500

Calculate: √576 + ∛1000

24 + 10 = 34

Algebra Translator

100

Write an expression for 9 more than a number x.

x + 9

200

One notebook costs y dollars. Write an expression for the total cost of 7 notebooks.

7y

300

Write an expression for 5 less than three times a number n.

3n − 5

400

Find the value of 6a + 4 when a = 7.

6 × 7 + 4 = 46

500

A rectangle has length 12 cm and width 7 cm. Use P = 2(l + w) to find its perimeter.

2(12 + 7) = 38 cm

Simplify and Expand

100

Simplify: 8x + 5x − 4x

9x

200

Simplify: 6p + 4q − 2p + 3q

4p + 7q

300

Expand: 4(x + 7)

4x + 28

400

Expand and simplify: 3(2y + 4) + 5y

6y + 12 + 5y = 11y + 12

500

Expand and simplify: 4(3m − 2) + 2(5 + m)

12m − 8 + 10 + 2m = 14m + 2