9MAT Numbers: mid-topic revision

Integers

100

Calculate -8 + 5

-3

200

Calculate -10-(-4)

-6

300

Calculate (-2) x (-5) x (-3)

-30

400

Divide 3/4 by 1/2

1 1/2 or 3/2

500

Calculate 1 1/2 x 2 1/3

3 1/2

Powers & Roots

100

What is 7²

49

200

Calculate 2³+3²

17

300

Find the value of third root of 27

3

400

Estimate the square root of 50

a number between 7 and 8

500

Solve x^-3 = 1/125

x=5

Factors & Primes

100

List all the factors of 12

1, 2, 3, 4, 6, 12

200

What is the first prime number greater than 10?

11

300

Use a factor tree to find the prime factors of 36.

36 = 2² x 3²

400

Find the Highest Common Factor (HCF) of 18 and 24.

6

500

Find the Lowest Common Multiple (LCM) of 6 and 8.

24

BEDMAS

100

Which is colder: -12°C or -15 °C.

-15 °C

200

Calculate -8 + (-5)

-13

300

Calculate -4 x -6.

24

400

Order these from smallest to largest: -5, 0.5, -0.5, 5, 0.

-5, -0.5, 0.5, 0, 5

500

Solve: (-2)³ + 10

2

Fractions

100

Simplify the fraction 12/20 to its simplest form.

3/5

200

Convert 17/5 into a mixed number.

3 2/5

300

Convert 4 and 2/3 into an improper fraction.

14/3

400

Find an equivalent fraction for 3/7 that has a denominator of 21.

9/21

500

Which is larger: 3/4 or 5/6? Show your working.

5/6

because equivalent fractions are 9/12 and 10/12