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+/- Numbers Year 1 – Addition and subtraction within 20

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Presentation on theme: "+/- Numbers Year 1 – Addition and subtraction within 20"— Presentation transcript:

1 +/- Numbers Year 1 – Addition and subtraction within 20

2

3 1 1 one

4 2 2 two

5 3 3 three

6 4 4 four

7 5 5 five

8 6 6 six

9 7 7 seven

10 8 8 eight

11 9 9 nine

12 1 10 ten

13 1 1 10 1 eleven

14 1 2 10 2 twelve

15 1 3 10 3 thirteen

16 1 4 10 4 fourteen

17 1 5 10 5 fifteen

18 1 6 10 6 sixteen

19 1 7 10 7 seventeen

20 1 8 10 8 eighteen

21 1 9 10 9 nineteen

22 2 20 twenty

23 1 1 one

24 2 2 two

25 3 3 three

26 4 4 four

27 5 5 five

28 6 6 six

29 7 7 seven

30 8 8 eight

31 9 9 nine

32 1 10 ten

33 1 1 10 1 eleven

34 1 2 10 2 twelve

35 1 3 10 3 thirteen

36 1 4 10 4 fourteen

37 1 5 10 5 fifteen

38 1 6 10 6 sixteen

39 1 7 10 7 seventeen

40 1 8 10 8 eighteen

41 1 9 10 9 nineteen

42 2 20 twenty

43

44

45

46

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

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

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

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

51

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

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

54

55 = 7 4 + 3 sum more than plus add altogether total

56 2 + 6 = 8 6 + 2 = 8

57

58 2 + 6 = 8 6 + 2 = 8

59 3 + 7 = 10 7 + 3 = 10

60 3 + 5 = 8

61 8 + 5 = 13

62 4 + 9 = 13

63

64 = 3 7 - 4 minus less than take away subtract how many left
find the difference how many left minus subtract less than take away

65 9 - 3 = 6

66 = 7

67

68 = 7

69 = 12 = 8

70 = 7 = 4


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