Adding and Subtracting Two Digit Numbers

48+13

• 76

• 59

• 61

• 68

50+37

• 97

• 82

• 87

• 77

74+18

• 83

• 94

• 88

• 92

79-45

• 45

• 34

• 44

• 36

77-26

• 41

• 32

• 51

• 47

32-18

• 16

• 14

• 27

• 15

67-48

• 11

• 19

• 18

• 21

63-43

• 20

• 30

• 25

• 10

What equation does this model show?

• 33 + 26

• 32 + 63

• 23 + 36

• 63 + 23

Can you make a new 10? What is the sum of the model?

• Yes, 45 + 27 = 72

• No, 45 + 27 = 62

• Yes, 45 + 27 = 62

• No, 45 + 27 = 72