Addition and Subtraction of Two Digit Numbers

360 - 254

• 106

• 114

• 116

• 206

Do you need to make a ten to solve?

• yes

• no

Ms. Flory has 28 apples and Ms. Delouis gives her 10 more. Do I need to add these numbers or subtract them?

• Add

• Subtract

What is the mistake?

• Did not subtract the 4 tens

• Did not take out a ten

• Did not subtract the ones

54 chicks hatched in 1st grade. Students took home 26 of the chicks. How many of the chicks were left?

• 54 - 26 = 32

• 54 + 26 = 80

• 54 - 26 = 28

• 54 + 26 = 70

Alexis got a new book for his birthday. He has read 55 pages so far. He has 36 more pages to read. How many pages are in the book?

• 55 + 36 = 91

• 55 + 36 = 81

• 55 - 36 = 19

• 55 - 36 = 21

Use your favorite strategy to find the difference of the following problem. 71 - 35

• 44

• 36

• 106

• 46

What is 10 less than 54?

• 64

• 53

• 55

• 44

What subtraction problem do these base ten blocks represent?

• 65 - 23 = 42

• 65 - 32 = 33

• 65 - 24 = 41

• 66 - 23 = 43

What subtraction problem is shown using the number line?

• 70 - 15 = 65

• 70 - 15 = 55

• 70 - 51 = 19

• 70 - 5 = 65