+/- Numbers Year 2 – Addition and subtraction of units within 100 www.KeyStage2Maths.com

30 20 6 7 8 5 9 4 1 2 3 twenty-seven twenty-eight thirty twenty-six twenty-nine twenty-three twenty twenty-one twenty-two twenty-four twenty-five

40 30 6 7 8 5 9 4 1 2 3 thirty-seven thirty-eight forty thirty-six thirty-nine thirty-three thirty thirty-one thirty-two thirty-four thirty-five

50 40 6 7 8 5 9 4 1 2 3 forty-seven forty-eight fifty forty-six forty-nine forty-three forty forty-one forty-two forty-four forty-five

60 50 6 7 8 5 9 4 1 2 3 fifty-seven fifty-eight sixty fifty-six fifty-nine fifty-three fifty fifty-one fifty-two fifty-four fifty-five

70 60 6 7 8 5 9 4 1 2 3 sixty-seven sixty-eight seventy sixty-six sixty-nine sixty-three sixty sixty-one sixty-two sixty-four sixty-five

80 70 6 7 8 5 9 4 1 2 3 seventy-seven seventy-eight eighty seventy-six seventy-nine seventy-three seventy seventy-one seventy-two seventy-four seventy-five

90 80 6 7 8 5 9 4 1 2 3 eighty-seven eighty-eight ninety eighty-six eighty-nine eighty-three eighty eighty-one eighty-two eighty-four eighty-five

100 90 6 7 8 5 9 4 1 2 3 ninety-seven ninety-eight one hundred ninety-six ninety-nine ninety-three ninety ninety-one ninety-two ninety-four ninety-five

100 one hundred

30 5 thirty-five 30 + 5 = 35

60 8 sixty-eight 60 + 8 = 68

80 1 eighty-one 80 + 1 = 81

55 < 71

55 > 51

41 > 14

62 > 26

Put these numbers into ascending order. 30 32 21 12 33 12 21 30 32 33

Put these numbers into ascending order. 72 7 23 32 27 7 23 27 32 72

80 7 6 Find 1 more than 86.

80 5 6 Find 1 less than 86.

50 40 9 Find 1 more than 49.

40 8 9 Find 1 less than 49.

30 1 Find 1 more than 30.

20 30 9 Find 1 less than 30.

34 35 36 37 38 Adding 1 Increasing Ascending Counting forwards Getting bigger Counting forwards Adding 1 Increasing Ascending

57 58 59 60 61

76 77 78 79 80

64 65 66 67 68

96 95 94 93 92 Decreasing Counting backwards Getting smaller Subtracting 1 Decreasing Descending

32 31 30 29 28

53 52 51 50 49

81 80 79 78 77

57 58 59 60 61 +1 +2 +3 +4

3 8 + 5 = 43

4 6 + 6 = 52

5 6 + 4 = 60

3 8 + 5 = 43 38 39 40 41 42 43

4 6 + 6 = 52 46 47 48 49 50 51 52

5 6 + 4 = 60 56 57 58 59 60

3 0 + 5 = 35 Adding units to tens

6 0 + 8 = 68 Adding units to tens

9 0 + 6 = 96 Adding units to tens

5 0 + 9 = 59 Adding units to tens

5 6 + 4 = 60

4 5 + 5 = 50

7 2 + 8 = 80

3 8 + 5 = 43 +2 +3 38 40 43 Adding by counting forwards on a number line

4 6 + 6 = 52 +4 +2 46 50 52 Adding by counting forwards on a number line

1 5 + 7 = 22 +5 +2 15 20 22 Adding by counting forwards on a number line

5 8 + 8 = 66 +2 +6 58 60 66 Adding by counting forwards on a number line

28 29 30 31 32 -4 -3 -2 -1

6 8 - 6 = 62

4 3 - 5 = 38

6 6 - 7 = 59

6 8 - 6 = 62 62 63 64 65 66 67 68

4 3 - 5 = 38 38 39 40 41 42 43

6 6 - 7 = 59 59 60 61 62 63 64 65 66

6 8 - 8 = 60 Adding units to tens

9 6 - 6 = 90 Adding units to tens

5 9 - 9 = 50 Adding units to tens

6 0 - 5 = 55 55 56 57 58 59 60

6 0 - 5 = 55 55 60

5 0 - 7 = 43 43 50

4 0 - 2 = 38 38 40

4 3 - 5 = 38 -2 -3 38 40 43

6 6 - 7 = 59 -1 -6 59 60 66

4 1 - 4 = 37 -3 -1 37 40 41

5 6 - 9 = 47 -3 -6 47 50 56