Adding and subtracting on a number line

The Maths Habit

Cross the river in two jumps. Where do you land in the middle?

On the big rock. It is the easy place to land.

Number line
A line with numbers in order along it.
Jump
A move along a number line. Its size goes on top.
Difference
How far apart two numbers are.

465053+4+3
  1. Put the first number on the line.
  2. Jump to the next ten.The ten is the easy place to land.
  3. Then jump the rest.The jumps add up to what you add: 4 + 3 = 7.

What is the next ten after each number?

47   186   296 50, 190, 300

Work out 47 + 6. Jump to the next ten. Then jump the rest. 53

475053+3+3

Work out 85 + 7. Jump to the next ten. Then jump the rest. 92

8590+592+2

Work out 47 + 6. Jump to the next ten. Then jump the rest. 53

475053+3+3

Work out 263 + 9. Jump to the next ten. Then jump the rest. 272

263270272+7+2

Work out 47 + 6. Jump to the next ten. Then jump the rest. 53

475053+3+3

Work out 198 + 5. Jump to the next ten. Then jump the rest. 203

198200+2203+3

Work out 47 + 6. Jump to the next ten. Then jump the rest. 53

475053+3+3

Work out 54 − 8. Jump back. Jump to the next ten. Then jump the rest. 46

545046−4−4

Work out 47 + 6. Jump to the next ten. Then jump the rest. 53

475053+3+3

Work out 36 + 27. Jump the tens first. Jump to the next ten. Then jump the rest. 63

36566063+20+4+3

Adding and subtracting on a number line worksheet, page 1

How far apart are 98 and 103?

98103100+2+3 5: 2 to get to 100, then 3 more

Work out 82 − 75. Count on. Start at the smaller number. Jump to the next ten. Then jump the rest. 7

758082+5+2

Work out 63 − 48. Count on. Start at the smaller number. Jump to the next ten. Then jump the rest. 15

4850+26063+10+3

Work out 82 − 75. Count on. Start at the smaller number. Jump to the next ten. Then jump the rest. 7

758082+5+2

Work out 403 − 396. Count on. Start at the smaller number. Jump to the next ten. Then jump the rest. 7

396400403+4+3

Adding and subtracting on a number line worksheet, page 2

Answer sheet

Thumbs up: count on. Thumbs down: jump back.

  1. 91 − 88

    Thumbs up: count on, 3

  2. 91 − 3

    Thumbs down: jump back, 88

  3. 402 − 397

    Thumbs up: count on, 5

  4. 402 − 5

    Thumbs down: jump back, 397

  5. 75 − 69

    Thumbs up: count on, 6

  1. What number is exactly halfway between 38 and 62?

    50

  2. Find two numbers, one each side of 100, with a difference of 7.

    For example, 96 and 103

  3. Find the missing number. 1997 + ? = 2010

    13

  1. Work out 58 + 7. Jump to the next ten. Then jump the rest.

    65

  2. Work out 203 − 6. Jump back.

    197

  3. Find the difference between 76 and 93. Count on from 76.

    17
Exit tickets to print