+/- Numbers Year 1 – Addition and subtraction within 20 www.KeyStage2Maths.com

1 1 one

2 2 two

3 3 three

4 4 four

5 5 five

6 6 six

7 7 seven

8 8 eight

9 9 nine

1 10 ten

1 1 10 1 eleven

1 2 10 2 twelve

1 3 10 3 thirteen

1 4 10 4 fourteen

1 5 10 5 fifteen

1 6 10 6 sixteen

1 7 10 7 seventeen

1 8 10 8 eighteen

1 9 10 9 nineteen

2 20 twenty

1 1 one

2 2 two

3 3 three

4 4 four

5 5 five

6 6 six

7 7 seven

8 8 eight

9 9 nine

1 10 ten

1 1 10 1 eleven

1 2 10 2 twelve

1 3 10 3 thirteen

1 4 10 4 fourteen

1 5 10 5 fifteen

1 6 10 6 sixteen

1 7 10 7 seventeen

1 8 10 8 eighteen

1 9 10 9 nineteen

2 20 twenty

1 2 3 4 5

6 7 8 9 0

__ 7 __ 8 4 5 6 Adding 1 Increasing Ascending Counting forwards Getting bigger Counting forwards Adding 1 Increasing Ascending

__ 13 __ 12 16 15 14 Decreasing Counting backwards Getting smaller Subtracting 1 Decreasing Descending

__ 19 __ 16 17 18 20 Adding 1 Increasing Ascending Counting forwards Getting bigger Counting forwards Adding 1 Increasing Ascending

__ __ 9 13 12 11 10 Decreasing Counting backwards Getting smaller Subtracting 1 Decreasing Descending

Put these numbers into ascending order. 9 19 3 5 12 5 9 19 3 12

Order these numbers from smallest to largest. 10 20 4 8 19 8 10 19 20 4

= 7 4 + 3 sum more than plus add altogether total

2 + 6 = 8 6 + 2 = 8

2 + 6 = 8 6 + 2 = 8

3 + 7 = 10 7 + 3 = 10

3 + 5 = 8

8 + 5 = 13

4 + 9 = 13

= 3 7 - 4 minus less than take away subtract how many left find the difference how many left minus subtract less than take away

9 - 3 = 6

10 - 3 = 7

10 - 3 = 7

16 - 4 = 12 14 - 6 = 8

15 - 8 = 7 13 - 9 = 4