Subtraction and Base Ten

What equation is represented by the Base Ten blocks?

• 326 - 121 = ?

• 121 + 326 = ?

• 121 - 326 = ?

• 226 - 21 = ?

What equation is represented by the Base Ten blocks?

• 332 - 110 = ?

• 33 - 11 = ?

• 332 - 101 = ?

• 332 + 101 = ?

What equation is represented by the Base Ten blocks?

• 40 + 4 = ?

• 54 + 14 = ?

• 14 - 40 = ?

• 54 - 14 = ?

Use your math journal to solve the subtraction problem using the base ten strategy. Choose the correct answer below.

• 21

• 31

• 91

Sophia has some beads. She gets 6 more. Now Sam has 15 beads. How many beads did Sophia have to start?

• 9

• 21

• 8

• 12

Use your math journal to solve the subtraction problem using the base ten strategy. Choose the correct answer below.

• 19

• 29

• 39

Use your math journal to solve the subtraction problem using the base ten strategy. Choose the correct answer below.

• 86

• 22

• 32

Use your math journal to solve the subtraction problem using the base ten strategy. Choose the correct answer below.

• 104

• 8

• 28

Use your math journal to solve the subtraction problem using the base ten strategy. Choose the correct answer below.

• 37

• 17

• 27

Use your math journal to solve the subtraction problem using the front-end strategy. Choose the correct answer below.

• 22

• 82

• 32