Grade 1 Math

Number rows and neighbours to 20

On this page children practise continuing number rows to 20 and naming the neighbours before and after a number. Start with the short method and the examples, then use the online practice or print a worksheet with answers.

How to solve this

  • Read the whole row from left to right.
  • Count one step forward for the next number.
  • Count one step backward to find the previous neighbour.

Examples

Fill the gap: 12, 13, __, 15

14

What are the neighbours of 17?

16 and 18

Practice problems with answers

Solve these problems on paper or out loud, then check the answer key. The online practice and the printable worksheet give a new set every time.

  1. 15, 16, ___, 18
  2. 9, 10, ___, 12
  3. 10, 11, ___, 13
  4. 13, 14, ___, 16
  5. 11, 12, ___, 14
  6. 14, 15, ___, 17
  7. 17, 18, ___, 20
  8. 16, 17, ___, 19
Show answers
  1. 17
  2. 11
  3. 12
  4. 15
  5. 13
  6. 16
  7. 19
  8. 18

More topics in this section