Multiplication and Division

What is 7 × 8?

• A54
• B56✓
• C63
• D72

Answer: 7 × 8 = 56. This is a key times table fact.

What is 9 × 6?

• A45
• B64
• C36
• D54✓

Answer: 9 × 6 = 54. You can check: 9 × 6 = 9 × 5 + 9 × 1 = 45 + 9 = 54.

What is 12 × 5?

• A50
• B55
• C60✓
• D65

Answer: 12 × 5 = 60. You can think of it as 10 × 5 + 2 × 5 = 50 + 10 = 60.

What is 24 ÷ 6?

• A3
• B4✓
• C5
• D6

Answer: 24 ÷ 6 = 4. Check: 4 × 6 = 24.

A baker makes 8 trays of biscuits. Each tray has 12 biscuits. How many biscuits does she make?

• A84
• B92
• C96✓
• D100

Answer: 8 × 12 = 96 biscuits.

What is 45 ÷ 9?

• A4
• B5✓
• C6
• D7

Answer: 45 ÷ 9 = 5. Check: 5 × 9 = 45.

A school orders 15 boxes of pens. Each box contains 20 pens. How many pens does the school order?

• A250
• B300✓
• C350
• D400

Answer: 15 × 20 = 300 pens.

What is 144 ÷ 12?

• A10
• B11
• C12✓
• D13

Answer: 144 ÷ 12 = 12. Check: 12 × 12 = 144.

What is 23 × 4?

• A82
• B84
• C92✓
• D102

Answer: 23 × 4 = (20 × 4) + (3 × 4) = 80 + 12 = 92.

A shop sells 6 packets of sweets. Each packet has 25 sweets. How many sweets are sold?

• A100
• B120
• C150✓
• D180

Answer: 6 × 25 = 150 sweets.

What is 72 ÷ 8?

• A8
• B9✓
• C10
• D11

Answer: 72 ÷ 8 = 9. Check: 9 × 8 = 72.

What is 34 × 3?

• A92
• B102✓
• C112
• D122

Answer: 34 × 3 = (30 × 3) + (4 × 3) = 90 + 12 = 102.

A library has 5 shelves. Each shelf has 32 books. How many books are there in total?

• A150
• B155
• C160✓
• D165

Answer: 5 × 32 = 160 books.

What is 180 ÷ 15?

• A10
• B11
• C12✓
• D13

Answer: 180 ÷ 15 = 12. Check: 12 × 15 = 180.

A farmer has 156 apples to put into boxes. Each box holds 12 apples. How many boxes does he need?

• A12
• B13✓
• C14
• D15

Answer: 156 ÷ 12 = 13 boxes.

What is 24 × 7?

• A162
• B176
• C156
• D168✓

Answer: 24 × 7 = (20 × 7) + (4 × 7) = 140 + 28 = 168.

Divide 144 by 12

• A10
• B11
• C12✓
• D13

Answer: 144 ÷ 12 = 12 because 12 × 12 = 144.

What is 35 × 6?

• A210✓
• B215
• C205
• D220

Answer: 35 × 6 = (30 × 6) + (5 × 6) = 180 + 30 = 210.

A shop orders 48 boxes of chocolates. Each box contains 12 chocolates. How many chocolates in total?

• A576✓
• B546
• C566
• D526

Answer: 48 × 12 = 48 × 10 + 48 × 2 = 480 + 96 = 576.

What is 156 ÷ 12?

• A13✓
• B14
• C12
• D11

Answer: 156 ÷ 12 = 13 because 13 × 12 = 156.

Multiply 23 by 15

• A355
• B305
• C325
• D345✓

Answer: 23 × 15 = 23 × 10 + 23 × 5 = 230 + 115 = 345.

If 8 × 6 = 48, what is 8 × 600?

• A4,800✓
• B480
• C400
• D48,000

Answer: 8 × 600 = 8 × 6 × 100 = 48 × 100 = 4,800.

A factory produces 324 items per day. How many items are produced in 7 days?

• A2,368
• B2,468
• C2,168
• D2,268✓

Answer: 324 × 7 = (300 × 7) + (24 × 7) = 2,100 + 168 = 2,268.

What is 456 ÷ 8?

• A57✓
• B59
• C58
• D56

Answer: 456 ÷ 8 = 57 because 57 × 8 = 456.

Divide 525 by 25

• A20
• B21✓
• C22
• D25

Answer: 525 ÷ 25 = 21 because 21 × 25 = 525.

What is 0.5 × 80?

• A40✓
• B45
• C50
• D4

Answer: 0.5 × 80 = (1/2) × 80 = 40.

A recipe uses 250 g of flour. If you make the recipe 6 times, how much flour is needed?

• A1,600 g
• B1,450 g
• C1,500 g✓
• D1,400 g

Answer: 250 × 6 = 1,500 g.

What is 1,000 ÷ 25?

• A50
• B35
• C45
• D40✓

Answer: 1,000 ÷ 25 = 40 because 40 × 25 = 1,000.

Multiply 34 by 25

• A950
• B750
• C800
• D850✓

Answer: 34 × 25 = 34 × (100/4) = 3,400 ÷ 4 = 850.

What is 72 ÷ 8?

• A7
• B8
• C10
• D9✓

Answer: 72 ÷ 8 = 9 because 9 × 8 = 72.

Which of these numbers is a prime number?

• A21
• B27
• C29✓
• D39

Answer: 21 = 3 × 7, 27 = 3 × 9 and 39 = 3 × 13, so each of those has more than two factors. 29 divides only by 1 and itself.

Which of these numbers has more than two factors?

• A2
• B9✓
• C11
• D17

Answer: 9 divides by 1, 3 and 9, so it has three factors. The other three numbers are prime and have only two factors each.

Which list shows all the prime factors of 30?

• A2, 3, 5✓
• B1, 2, 3, 5
• C2, 3, 5, 6
• D5, 6

Answer: 30 = 2 × 3 × 5 and each of those is a prime number. 1 and 6 are not prime, so they are not prime factors.

What is 8 squared?

• A16
• B24
• C512
• D64✓

Answer: Squaring a number means multiplying it by itself, so 8 squared is 8 × 8 = 64.

What is 3 cubed?

• A27✓
• B6
• C9
• D12

Answer: Cubing a number means using it three times in a multiplication: 3 × 3 × 3 = 27.

Which of these is a square number?

• A24
• B36✓
• C42
• D50

Answer: 36 is a square number because 6 × 6 = 36. There is no whole number that multiplies by itself to give 24, 42 or 50.

Rosie puts 47 counters into groups of 6. How many whole groups are there, and how many counters are left over?

• A7 groups and 5 left over✓
• B7 groups and 6 left over
• C8 groups and 1 left over
• D6 groups and 11 left over

Answer: 6 × 7 = 42 and 47 − 42 = 5, so Rosie makes 7 whole groups with 5 counters left over. What is left over must always be smaller than the group size.

154 pupils are going on a school trip. Each coach holds 40 pupils. How many coaches are needed?

• A3 coaches
• B3.85 coaches
• C5 coaches
• D4 coaches✓

Answer: Three coaches carry 3 × 40 = 120 pupils, which leaves 34 pupils with no seat. A fourth coach is needed for them.

Eggs are packed into boxes of 6. There are 100 eggs. How many boxes can be filled completely?

• A4
• B15
• C16✓
• D17

Answer: 6 × 16 = 96 eggs, so 16 boxes are full. The 4 eggs left over are not enough to fill another box.

245 books are shared equally between 8 shelves. How many books are left over?

• A3
• B8
• C30
• D5✓

Answer: 8 × 30 = 240, so each shelf holds 30 books. That leaves 245 − 240 = 5 books over.