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Addition
Place Value
Balancing Equations
Vocabulary
Subtraction
100

23 + 54 = 

23 + 54 = 77

100

What digit is in the ones place?


45

5

100

43+13=58-2


Yes!

43+13=56

58-2=56. 

This equation is balanced

100
the answer to an addition problem 
sum
100

43 - 21=

43 - 21 = 22

200

43 + 56 =

43 + 56 = 99

200
What is the value of the 6?


163

60
200

100=56+50

No! This equation is not balanced.

100=100

56+50=106

200
the answer to a subtraction problem
difference
200

67 - 56=

67 - 56 = 11

300

34 + 74 = 

34 + 74 = 108

300
What is the value of the 8?


783

80
300

3 tens and 6 ones = 63

No!

3 tens and 6 ones = 36

63=63

300

Each number in an equation is called a...

addend

300

82 - 32=

82 - 32 = 50

400

73 + 45 = 

73 + 45 = 118

400
What digit is in the hundreds place?


456

4
400

23+68=98-45

No-

23+68=91

98-45=53

This equation is not balanced

400
How many ones in 3 sticks of 10?

30 ones


400

96 - 15=

96 - 15 = 81

500

123 + 145 = 

123 + 145 = 268

500
What digit is in the thousands place?


3456

3
500

100+10=130-20

Yes!

100+10=110

130-20=110

This equation is balanced


500
a set of addition and subtraction facts with the same numbers
a fact family
500

134 - 122=

134 - 122 = 12