Add vertically - break apart to subtract

Mona has 27 more blueberries than Fadia . Fadia has 15 blueberries . How many blueberries does Mona have?

• 27 - 15 = 11

• 27 + 15 = 42

• 15 + 27 = 58

Add.    34 + 2 1+ 11 + 15 = ...........

• 71

• 90

• 81

Add . 3 0 + 27 + 37 = ...........

• 94

• 48

• 84

Which one is the best break apart ( 9) to subtract?

 

• 7 + 2

• 5 + 4

• 8 + 1

Salem buys 23 markers .  He uses 3 of them  . Then, he buys 11 more markers .

   How many markers does Salem have now?

    Step 1:    23 - 3 = 20

Step 2:   ??

• 20 + 11 = 21

• 23 + 11 = 34

• 20 + 11 = 31

Choose the correct answer.

• A

• B

• C

Use the bar diagram to find the answer.

• 48

• 83

• 88

Break apart numbers to subtract.

97 - 8 = ............

• 97 - 6 = 92

  92 - 2 = 90

• 97 - 7 = 90

  90 - 1 = 89