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Calculate Without a Calculator (1)

In this worksheet, students must pretend that the '5' key on their calculator is broken and select alternative ways to carry out the given calculations.

'Calculate Without a Calculator (1)' worksheet

Key stage:  KS 2

Curriculum topic:  Number: Addition, Subtraction, Multiplication and Division

Curriculum subtopic:  Solve Multi-Step Add/Subtract Problems

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

In this worksheet, you have to select alternative ways of carrying out the given calculations because the '5' key is broken on your calculator.

 

Example

Work out   567 + 45

 

Answer

We could, for example, work out   467 + 100 + 44 + 1

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

245 + 14

240 + 5 + 14

244 + 1 + 14

246 - 1 + 14

245 + 10 + 4

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

245 + 15

240 + 5 + 14 + 1

244 + 1 + 14 + 1

246 - 1 + 16 - 1

244 + 16

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

5 x 4

4 + 4 + 4 + 4 + 4

5 + 5 + 5 + 5

4 x 4 + 4

4 x 4 x 4 x 4 x 4

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

27 - 5

27 - 6 + 1

28 - 6

27 - 4 - 1

27 - 4 + 1

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

125 - 15

125 - 10 - 5

120 + 5 - 10 - 5

126 - 16

124 -14

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

125 x 11

120 x 11 + 4

124 x 11 + 124

124 x 11 + 11

120 x 11 + 55

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

55 + 18

60 + 13

(110 + 36) ÷ 2

(110 + 36) x 0.5

50 + 23

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

28 ÷ 5

28 - 5

28 ÷ 4 + 1

28 ÷ (4 + 1)

56 ÷ 10

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

38 ÷ 5

38 - 5

38 ÷ 4 + 1

38 ÷ (4 + 1)

76 ÷ 10

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

6.5 x 4

6 x 4 + 0.5 x 4

13 x 2

65 x 0.4

6.5 + 6.5 + 6.5 + 6.5

  • Question 1

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

245 + 14

CORRECT ANSWER
244 + 1 + 14
246 - 1 + 14
  • Question 2

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

245 + 15

CORRECT ANSWER
244 + 1 + 14 + 1
246 - 1 + 16 - 1
244 + 16
  • Question 3

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

5 x 4

CORRECT ANSWER
4 + 4 + 4 + 4 + 4
4 x 4 + 4
  • Question 4

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

27 - 5

CORRECT ANSWER
27 - 6 + 1
28 - 6
27 - 4 - 1
  • Question 5

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

125 - 15

CORRECT ANSWER
126 - 16
124 -14
  • Question 6

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

125 x 11

CORRECT ANSWER
124 x 11 + 11
  • Question 7

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

55 + 18

CORRECT ANSWER
60 + 13
(110 + 36) ÷ 2
  • Question 8

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

28 ÷ 5

CORRECT ANSWER
28 ÷ (4 + 1)
  • Question 9

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

38 ÷ 5

CORRECT ANSWER
38 ÷ (4 + 1)
76 ÷ 10
  • Question 10

Select all the alternative ways to carry out the following calculation without using the '5' key on your calculator.

 

6.5 x 4

CORRECT ANSWER
13 x 2
---- OR ----

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