The smart way to improve grades

Comprehensive & curriculum aligned

Affordable pricing from £10/month

Know Your Numbers: How to Double

In this worksheet, students work out what comes out of or goes in to a Doubling Machine.

'Know Your Numbers: How to Double' worksheet

Key stage:  KS 1

Curriculum topic:  Number: Multiplication and Division

Curriculum subtopic:  Solve Multiplication/Division Problems

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

In this worksheet, you must work out what went in or what comes out of a Doubling Machine.

 

 

Here 6 x 2 = 12, so when 6 goes in, 12 comes out.

Also 12 ÷ 2 = 6, so when 12 comes out, 6 must have gone in.

 

Remember that...

Doubling is the same as multiplying by 2.

Halving is the same as dividing by 2.

5 goes into this machine.  Which number will come out?

 

3 goes into this machine.  Which number will come out?

 

4 goes into this machine.  Which number will come out?

 

10 goes into this machine.  Which number will come out?

 

20 goes into this machine.  Which number will come out?

 

20 comes out of this machine.  Which number went in?

 

2 comes out of this machine.  Which number went in?

 

22 comes out of this machine.  Which number went in?

 

16 comes out of this machine.  Which number went in?

 

50 comes out of this machine.  Which number went in?

 

  • Question 1

5 goes into this machine.  Which number will come out?

 

CORRECT ANSWER
10
EDDIE SAYS
5 × 2 = 10
  • Question 2

3 goes into this machine.  Which number will come out?

 

CORRECT ANSWER
6
EDDIE SAYS
3 × 2 = 6
  • Question 3

4 goes into this machine.  Which number will come out?

 

CORRECT ANSWER
8
EDDIE SAYS
4 × 2 = 8
  • Question 4

10 goes into this machine.  Which number will come out?

 

CORRECT ANSWER
20
EDDIE SAYS
10 × 2 = 20
  • Question 5

20 goes into this machine.  Which number will come out?

 

CORRECT ANSWER
40
EDDIE SAYS
20 × 2 = 40
  • Question 6

20 comes out of this machine.  Which number went in?

 

CORRECT ANSWER
10
EDDIE SAYS
20 ÷ 2 = 10
  • Question 7

2 comes out of this machine.  Which number went in?

 

CORRECT ANSWER
1
EDDIE SAYS
2 ÷ 2 = 1
  • Question 8

22 comes out of this machine.  Which number went in?

 

CORRECT ANSWER
11
EDDIE SAYS
22 ÷ 2 = 11
  • Question 9

16 comes out of this machine.  Which number went in?

 

CORRECT ANSWER
8
EDDIE SAYS
16 ÷ 2 = 8
  • Question 10

50 comes out of this machine.  Which number went in?

 

CORRECT ANSWER
25
EDDIE SAYS
50 ÷ 2 = 25
---- OR ----

Sign up for a £1 trial so you can track and measure your child's progress on this activity.

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Start your £1 trial

Start your trial for £1