Adding and Subtracting Two Digit Numbers

What number does this model show?

• 48

• 59

• 60

• 68

What equation does this model show?

• 55 + 10 = 65

• 45 + 5 = 50

• 46 + 10 = 56

• 44 + 5 = 49

How would you write this model in expanded form?

• 10 + 5 = 15

• 30 + 3 = 33

• 25 + 4 = 29

• 20 + 5 = 25

10 crayons fit in a box. I have 3 boxes of crayons. How many crayons do I have?

• 13

• 10

• 30

• 33

When adding 34 + 29 can you regroup ten ones into a ten?

• Yes, 3 + 2 = 5

• Yes, 4 + 9 = 13

• No, 3 + 2 = 5

• No, 4 + 9 = 13

10 crayons fit in a box. I have 4 boxes. I also have 3 extra crayons. How many crayons do I have?

• 81

• 89

• 99

• 91

• 76
• 67
• 54
• 86

Q1. What is the result of 100 + 2?

• A) 100

• B) 102

• C) 112

• D) 92

Mary had 30 + 4 people come to her party. What is 30 + 4 in standard form?

• 6

• 34

• 22

• 12