Number Revision Pack

Number

+ - x ÷ Sig. Fig. Fractions +- Finding % QUESTION A1 QUESTION B1 QUESTION C1 QUESTION D1 (no calculator)

36  ×  28 Round to 1 significant

figure: 19,305,506

Solve 27+

67

Find 30% of 90

QUESTION A2 QUESTION B2 QUESTION C2 QUESTION D2 (no calculator) 215  ×  32

Round to 2 significant figures:

26,935,304

Solve 29+

79

Find 20% of 500

QUESTION A3 QUESTION B3 QUESTION C3 QUESTION D3 (no calculator) 39  ×  548

Round to 3 significant figures:

586,504,620

Solve 210+

15

Find 0.6% of 45

QUESTION A4 QUESTION B4 QUESTION C4 QUESTION D4 (no calculator) 999  ×  68

Round to 2 significant figures:

68,688,586

Solve 87+

614

Find 92.5% of 80

QUESTION A5 QUESTION B5 QUESTION C5 QUESTION D5 (no calculator) 568  ×  98

Round to 1 significant figure:

0.0503205

Solve 25+

1215

Find 16.5% of 160

QUESTION A6 QUESTION B6 QUESTION C6 QUESTION D6 (no calculator) 3655  ÷  15

Round to 2 significant figures: 3.0566

Solve 29+

67

Find 125% of 125

Number

+ - x ÷ d.p. Fractions +- Finding % QUESTION A7 QUESTION B7 QUESTION C7 QUESTION D7 (no calculator) 5775  ÷  11

Round to 2 d.p. 4.5838304

Solve 23+

13

Find 10% of 920

QUESTION A8 QUESTION B8 QUESTION C8 QUESTION D8 (no calculator) 1212  ÷  24

Round to 2 d.p. 0.0093459

Solve 27+

57

Find 20% of 650

QUESTION A9 QUESTION B9 QUESTION C9 QUESTION D9 (no calculator) 615384  ÷  4

Round to 3 d.p. 62.626262

Solve 23+

14

Find 13% of 545

QUESTION A10 QUESTION B10 QUESTION C10 QUESTION D10 (no calculator) 4050+  3843

Round to 4 d.p. 5803.5832995

Solve 1213+

126

Find 110% of 55

QUESTION A11 QUESTION B11 QUESTION C11 QUESTION D11 (no calculator) 20405−  4737

Round to 2 d.p. 9.99999

Solve 89+ 3

13

Find 205% of 60

QUESTION A12 QUESTION B12 QUESTION C12 QUESTION D12 (no calculator) 8049−  7191

Round to 1 d.p. 0.000991

Solve 223+ 8

45

Find 0.2% of 5080

Number

Decimals Negatives Fractions + - + - % QUESTION A13 QUESTION B13 QUESTION C13 QUESTION D13 (no calculator) 35.5+ 4.035

Solve −3+ 40

Solve 23−

13

Increase 50 by 8%

QUESTION A14 QUESTION B14 QUESTION C14 QUESTION D14 (no calculator) 59.34+ 5.934

Solve −4+  20

Solve 23−

15

Increase 300 by 19%

QUESTION A15 QUESTION B15 QUESTION C15 QUESTION D15 (no calculator) 5.5− 4.035

Solve 10− 25

Solve 35−

18

Increase 80 by 17.5%

QUESTION A16 QUESTION B16 QUESTION C16 QUESTION D16 (no calculator) 285.44− 9.999

Solve −3− 5

Solve 911−

533

Decrease 205 by 8%

QUESTION A17 QUESTION B17 QUESTION C17 QUESTION D17 (no calculator) 35.5÷ 0.01

Solve −3+ 9

Solve 2528−

17

Decrease 60 by 12%

QUESTION A18 QUESTION B18 QUESTION C18 QUESTION D18 (no calculator) 965.960 x 0.01

Solve −3− 20

Solve 67−

14

Decrease 550 by 0.5%

Number

BIDMAS Negatives Fractions x ÷ Number As % QUESTION E1 QUESTION F1 QUESTION G1 QUESTION H1

8+ 6  ×  3 Solve 32−  −3

Solve 34×

23

30 as a % of 70

QUESTION E2 QUESTION F2 QUESTION G2 QUESTION H2 12− 3  ×  3 Solve

−19−  −2 Solve 35×

29

90 as a % of 250

QUESTION E3 QUESTION F3 QUESTION G3 QUESTION H3 6  ×  3! Solve

28−  40 Solve 34÷

23

32 as a % of 140

QUESTION E4 QUESTION F4 QUESTION G4 QUESTION H4 11  ×  2+ (4÷ 2) Solve

−5− 9 Solve 67÷

13

6 as a % of 404

QUESTION E5 QUESTION F5 QUESTION G5 QUESTION H5 20  ×  6÷ (4÷ 2) Solve

−4 ! (H) Solve 334×5

23

55 as a % of 130

QUESTION E6 QUESTION F6 QUESTION G6 QUESTION H6 2  ×  (9− 5) Solve

30−5

(H) Solve 225÷ 4

14

44 as a % of 20

Number

Factors Indices Ratios Finding 100% QUESTION E7 QUESTION F7 QUESTION G7 QUESTION H7

List the factors of 20 Solve 3!

Divide 500 into the ratio 2:3

If 60% is 300, what is 100%?

QUESTION E8 QUESTION F8 QUESTION G8 QUESTION H8 List the factors of 32 Solve

2! Divide 180 into the

ratio 2:3:4 If 120% is 80, what is

100%?

QUESTION E9 QUESTION F9 QUESTION G9 QUESTION H9 List the common

factors of 40 and 10 Solve 39!

Tom and Meg divide £300. If Meg has £20 , write their share ratio

in its lowest form

If 30% is 600, what is 100%?

QUESTION E10 QUESTION F10 QUESTION G10 QUESTION H10 List the common

factors of 55 and 25 Solve 40!

Bob and Oli share money at a ratio of 4:3. Bob has £50.

How much does Oli have?

If I add 20% to a number and end with

90, what did I start with?

QUESTION E11 QUESTION F11 QUESTION G11 QUESTION H11 Write 300 as a product

of its prime factors Solve 343!

Amy and Dan share money at a ratio of 5:3. Amy has £30.

How much does Dan have?

If I subtract 5% from a number and end with 190, what did I start

with?

QUESTION E12 QUESTION F12 QUESTION G12 QUESTION H12 Write 420 as a product

of its prime factors Write in index form:

8×8×8×8! Divide £450 into a

ratio of 4:5 If I subtract 90% from a number and finish with 10, what did I

start with?

Number

Multiples Prime/Square Equivalents % Change QUESTION E13 QUESTION F13 QUESTION G13 QUESTION H13

Write down a multiple of 26

What prime numbers are there between 40

and 50?

Write 0.5 as a fraction

I start with 80 and finish at 100. What %

increase is this?

QUESTION E14 QUESTION F14 QUESTION G14 QUESTION H14 Write down a multiple

of 9 What prime numbers are there between 60

and 70?

Write 9% as a decimal I start with 50 and finish at 105. What %

increase is this?

QUESTION E15 QUESTION F15 QUESTION G15 QUESTION H15 Find a common

multiple of 9 and 30 Write the number 21 as a product of any

combination of prime numbers

Write 2/3 as a percent I start with 6 and finish at 26. What %

increase is this?

QUESTION E16 QUESTION F16 QUESTION G16 QUESTION H16 Find the lowest

common multiple of 204 and 80

Write down the first 4 square numbers

Order these (ascending):

13 , 0.04, 40%, 30%

I start with 120 and finish at 100. What %

decrease is this?

QUESTION E17 QUESTION F17 QUESTION G17 QUESTION H17 Find the lowest

common multiple of 120 and 50

Are square numbers always positive?

Order these (descending):

17 , 0.36, 51%, 0.09

I start with 650 and finish at 120. What %

decrease is this?

QUESTION E18 QUESTION F18 QUESTION G18 QUESTION H18 Find the lowest

common multiple of 10 and 16

What square numbers are there between 80

and 105?

Which of these are equivalent?

0.2, 2%,210 ,

20100 , 2.5

I start with 85 and finish at 115. What %

increase is this?

Answers Section A J L A1 1008 A2 6880 A3 21372 A4 67932 A5 55664 A6 243.67 A7 525 A8 50.5 A9 153846 A10 7893 A11 15668 A12 858 A13 39.535 A14 65.274 A15 1.465 A16 275.441 A17 3550 A18 0.6596 Section E J L E1 26 E2 3 E3 54 E4 24 E5 60 E6 8 E7 1,2,4,5,10,20 E8 1,2,4,8,16,32 E9 1,2,5,10 E10 1,5 E11 2!×3×5! E12 2!×3×5×7 E13 26,52,78  𝑒𝑡𝑐 E14 9,18,27, 𝑒𝑡𝑐 E15 90,180  𝑒𝑡𝑐 E16 4080 E17 600 E18 80

Section B J L B1 20,000,000 B2 27,000,000 B3 587,000,000 B4 69,000,000 B5 0.05 B6 3.1 B7 4.58 B8 0.01 B9 62.626 B10 5803.5833 B11 10.00 B12 0.0 B13 37 B14 16 B15 −15 B16 −8 B17 6 B18 −23 Section F J L F1 35 F2 −17 F3 −12 F4 −14 F5 16 F6 −6 F7 9 F8 32 F9 1 F10 1600 F11 343 F12 8! F13 41,43,47 F14 61,67 F15 7×3 F16 1,2,4,9 F17 𝑦𝑒𝑠 F18 81,100

Section C J L C1 1 and 1/7 C2 1 C3 2/5 C4 1 and 4/7 C5 1 and 1/5 C6 1 and 5/63 C7 1 C8 1 C9 11/12 C10 25/26 C11 4 and 2/9 C12 11 and 7/15 C13 1/3 C14 7/15 C15 19/40 C16 2/3 C17 3/4 C18 17/28 Section G J L G1 1/2 G2 2/15 G3 1 and 1/8 G4 2 and 4/7 G5 21 and 1/4 G6 48/85 G7 200: 300 G8 40: 60: 80 G9 1: 14 G10 £37.50 G11 £18 G12 200: 250 G13 1/2 G14 0.09 G15 66.67% G16 0.04,30%,1/3,40% G17 51%,0.36,1/7,0.09 G18 0.2, 2/10, 20/100

Section D J L D1 27 D2 100 D3 0.27 D4 74 D5 26.4 D6 156.25 D7 92 D8 130 D9 70.85 D10 60.5 D11 123 D12 10.16 D13 54 D14 357 D15 94 D16 188.6 D17 52.8 D18 547.25 Section H J L H1 42.9% H2 36% H3 22.9% H4 1.5% H5 42.3% H6 220% H7 500 H8 66.67% H9 2000 H10 75 H11 200 H12 100 H13 25% H14 110% H15 333.33% H16 16.67% H17 81.5% H18 35.3%