Week 1 Session 1

Key Skills Answers

Q Question Answer

1 61 × 31 1891

2 657 − 382 275

3 7.2 × 94.2 678.24

4 0.7 as a fraction 7/10

5 46.15 + 5.08 51.23

6 (−40) ÷ (−4) 10

7If a = 4 b = 3 and c = 1, what is the value of 3a

− b2 ?3

8 3 − (−5) 8

9 What is the highest common factor of 12 and 4? 4

10 What is the value of 13 squared? 169

Week 1 Session 1

Mental Strategies Answers

Q Question Answer

1 2 + 3 5

2 89 + 11 100

3 What is half of 6? 3

4 125 − 10 115

5 177 + ☐ = 270 93

6 53 = 23 + ☐ 30

7 805 − 804 1

8 4 × 1 = 4, so 4 ÷ 4 = ☐ 1

9 Write 20:12 in 12 hour clock format 8:12 pm

10 9:37 pm is how many minutes after 9:08 pm? 29

Week 1 Session 1

Timestables Answers

Q Question Answer

1 2 × 9 = ☐ 18

2 24 ÷ 3 = ☐ 8

3 10 × ☐ = 80 8

4 6 ÷ ☐ = 3 2

5 1 × 2 = ☐ 2

6 28 ÷ 7 = ☐ 4

7 ☐ × 6 = 54 9

8 ☐ ÷ 2 = 5 10

9 3 × 9 = ☐ 27

10 4 ÷ 4 = ☐ 1

Week 1

Session 1

Calculate your Ninja

Score to see which

Ninja Belt you’ve

earned today!

Week 1 Session 2

Mental Strategies Answers

Q Question Answer

1 ☐ + 4 = 5 1

2 38 + 62 100

3 What is half of 2? 1

4 128 − 10 118

5 120 + ☐ = 210 90

6 124 = 90 + ☐ 34

7 610 − 606 4

8 1 × 7 = 7, so 7 ÷ 1 = ☐ 7

9 Write 11:07 am in 24 hour clock format 11:07

10 From 3:01 am, how many minutes until 3:19 am? 18

Week 1 Session 2

Timestables Answers

Q Question Answer

1 2 × 9 = ☐ 18

2 30 ÷ 5 = ☐ 6

3 10 × ☐ = 100 10

4 54 ÷ ☐ = 6 9

5 10 × 7 = ☐ 70

6 40 ÷ 10 = ☐ 4

7 ☐ × 5 = 15 3

8 ☐ ÷ 8 = 8 64

9 5 × 1 = ☐ 5

10 24 ÷ 3 = ☐ 8

Week 1 Session 2

Key Skills Answers

Q Question Answer

1 81 × 98 7938

2 1596 − 837 759

3 9.1 × 13.13 119.483

4 20% as a fraction 20/100 or 1/5

5 4.98 + 15.59 20.57

6 (−18) ÷ 3 −6

7If a = 7 b = 5 and c = 3, what is the value of 3b2

?75

8 (−1) − (−4) 3

9 Is 2 a factor of 12? Yes

10 What is the positive value of √64? 8

Week 1

Session 2

Calculate your Ninja

Score to see which

Ninja Belt you’ve

earned today!

Week 2 Session 1

Mental Strategies Answers

Q Question Answer

1 ☐ + 6 = 10 4

2 What is double 5? 10

3 Halve 63 31.5

4 26 + 30 56

5 98 + 99 197

6 22 + 10 = 22 + 8 + ☐ 2

7 3 + 223 226

8 20 + 61 = 20 + 60 + ☐ 1

9 ☐ + 3 = 5 2

10 ☐ + 2 = 20 18

Week 2 Session 1

Timestables Answers

Q Question Answer

1 9 × 5 = ☐ 45

2 10 ÷ 2 = ☐ 5

3 8 × ☐ = 8 1

4 16 ÷ ☐ = 4 4

5 8 × 4 = ☐ 32

6 15 ÷ 3 = ☐ 5

7 ☐ × 2 = 12 6

8 ☐ ÷ 7 = 1 7

9 5 × 8 = ☐ 40

10 14 ÷ 2 = ☐ 7

Week 2 Session 1

Key Skills Answers

Q Question Answer

1 3905 ÷ 5 781

2 7 + 25 ÷ 5 12

3 2.013 ÷ 0.1 20.13

4 2.26 × 1000 2260

5 34 − 0.74 33.26

6 Write 56/72 in its simplest form 7/9

7 Difference between 4 and −4 8

8 See number line 6

9 What is the lowest common multiple of 4 and 5? 20

10 What is the cube root of 27? 3

0

1

2

3

4

5

0 10

Value of the dot?

Week 2

Session 1

Calculate your Ninja

Score to see which

Ninja Belt you’ve

earned today!

Week 2 Session 2

Mental Strategies Answers

Q Question Answer

1 6 + ☐ = 10 4

2 What is double 7? 14

3 Halve 31 15.5

4 103 + 60 163

5 76 + 77 153

6 43 + 9 = 43 + 7 + ☐ 2

7 5 + 142 147

8 95 + 13 = 90 + 10 + ☐ 8

9 3 + 2 5

10 3 + ☐ = 20 17

Week 2 Session 2

Timestables Answers

Q Question Answer

1 9 × 3 = ☐ 27

2 63 ÷ 9 = ☐ 7

3 10 × ☐ = 20 2

4 30 ÷ ☐ = 10 3

5 10 × 8 = ☐ 80

6 64 ÷ 8 = ☐ 8

7 ☐ × 2 = 16 8

8 ☐ ÷ 7 = 6 42

9 4 × 3 = ☐ 12

10 72 ÷ 9 = ☐ 8

Week 2 Session 2

Key Skills Answers

Q Question Answer

1 608 ÷ 4 152

2 1 + 4 × 2 9

3 42.4 ÷ 8 5.3

4 0.86 × 1000 860

5 27.39 − 2.59 24.8

6 Write 72/80 in its simplest form 9/10

7 Which is the lowest number, 2 or −10? −10

8 See number line 6

9 What is the lowest common multiple of 3 and 4? 12

10 What is the value of (−5) cubed? −125

0

1

2

3

4

5

0 30

Value of the dot?

Week 2

Session 2

Calculate your Ninja

Score to see which

Ninja Belt you’ve

earned today!

Week 3 Session 1

Mental Strategies Answers

Q Question Answer

1 ☐ + 13 = 20 7

2 Double 96 192

3 79 + 10 89

4 120 − 80 40

5 8 = 7 + ☐ 1

6 13 − 10 = 13 − 3 − ☐ 7

7 85 + 85 = 85 × ☐ 2

8 What is the time on the clock? 4:00 am

9 8 + 2 10

10 81 + ☐ = 100 19

Week 3 Session 1

Timestables Answers

Q Question Answer

1 6 × 6 = ☐ 36

2 3 ÷ 3 = ☐ 1

3 4 × ☐ = 32 8

4 4 ÷ ☐ = 4 1

5 5 × 4 = ☐ 20

6 45 ÷ 9 = ☐ 5

7 ☐ × 7 = 28 4

8 ☐ ÷ 6 = 9 54

9 4 × 5 = ☐ 20

10 48 ÷ 8 = ☐ 6

Week 3 Session 1

Key Skills Answers

Q Question Answer

1 2757 + 5432 8189

2 42 + 2 × 4 24

3Write Four Thousand, Three Hundred and Twenty

in digits4320

4 5.94 ÷ 10 0.594

5 1 × (−8) −8

6 Round 0.7475 to 1 d.p. 0.7

7 1 + (−9) −8

8 Round 0.4559 to 2 s.f. 0.46

9 Letter at (−2, −2) V

10 10/1 = ☐/4 40

Week 3

Session 1

Calculate your Ninja

Score to see which

Ninja Belt you’ve

earned today!