Add/Subtract

Unknowns

100

45 + ____ = 67

21

200

27 + ____ = 54

27

300

_____ + 43 = 75

32

400

65 - _____ = 89

24

500

_______ - 43 = 32

75

Riddles

100

I am have 2 digits

I am an even number 

I have 9 tens and 4 ones

94

200

I have 2 digits

I am an odd number

I am 95-30

65

300

I have 2 digits 

I am between 30 and 50

I am 20 + 25

400

I have 2 digits

My tens is an odd number

My ones is an even number

I am lower than 37, higher than 34

36

500

I am 2 digits

My tens are an odd number

My ones are an even number

I am DOUBLE 20 plus 18.

58

Show with a bar model

100

Ana scored 23 goals

Sam scored 46 goals. 

How many goals did they score in all? 

200

Cal baked 65 cookies; his Dad ate 43 cookies. How many cookies were left?

300

There were 72 books in the basket. Some were Dragon Masters, and some were Magic Treehouse. How many of each book were there? 

400

I donated 4 pairs of shoes. Mom donated 10 more pairs. How many PIECES of shoes did we donate in all? You can draw to help your thinking and then show your bar model. 

500

Dad bought a watermelon for 45 pesos and fish for 37 pesos. If he had 100 pesos, how much change would he get back? 

Fact Families

100

What addition number sentence is in the 23 + 31 = 54 family? 

31+23=54

200

What subtraction number sentence is in the 56+23=79 family?

79-23=56 Or

79-56=23

300

Write 1 addition and 1 subtraction number sentence in the 65=25+40 family. 

40+25=65

65-40=25 or 65-25=40

400

What is missing in this family?

43+24 = 67

67-24=43

67-43=24

24+43=67

500

Write 3 number sentences in the family of

95=14+81

81+14=95

95-14=81

95-81=14

Tens and Ones

100

67

60 tens and 7 ones

200

80 + 9

89

300

90-30 tens 

20-12 ones 

68

400

95-45 tens

30-23 ones

57

500

87 - 27 tens

50 - 45 ones

65