Adding and Subtracting Whole Numbers Between 20 and 100

35 + 28

45+68=

• 90

• 113

• 88

• 34

Add the two numbers. 

• 98

• 90

• 88

• 97

37 + 70

   22
+ 45

• 65

• 66

• 67

• 68

22 + 63 = _____________

• 45

• 82

• 85

   45

+ 67
_________

• 1014

• 112

• 1011

• 102

When adding positive numbers on a number line, you move to the ____________.

• Right

• Left

Add 2 tens.

What is the new total?

• 46

• 36

• 56

29+2

• 31

• -21

• 32

• 33