Math 3-4-2 Digit Addition without Regrouping Partial Sums

Add the two numbers by combining 10's and 1's.

• 30 + 2 = 32

• 30 + 7 = 37

• 40 + 7 = 47

Add the two numbers by combining 10's and 1's.

• 50 + 4 = 54

• 50 + 1 = 51

• 50 + 3 = 53

Add the two numbers by combining 10's and 1's.

• 90 + 8 = 98

• 90 + 1 = 91

• 80 + 8 = 88

Add the two numbers by combining 10's and 1's.

• 40 + 3 = 43

• 40 +5 = 45

• 40 +9 = 49

Add the two numbers by combining 10's and 1's.

• 80+ 5 = 85

• 80 + 2 = 82

• 80 + 7 = 87

Add the two numbers by combining 10's and 1's.

• 80 + 5 = 85

• 80 + 4 = 84

• 80 + 2 = 82

Add the two numbers by combining 10's and 1's.

• 80 + 6 = 86

• 80 + 8 = 88

• 80 + 9 = 89

Add the two numbers by combining 10's and 1's.

• 90 + 9 = 99

• 80 + 8 = 89

• 90 + 4 = 94

Add the two numbers by combining 10's and 1's.

• 70 + 5 = 75

• 70 + 7 = 77

• 70 + 2 = 72

Add the two numbers by combining 10's and 1's.

• 80 + 7 = 87

• 90 + 7 = 97

• 90 + 2 = 92