Digit Subtraction

There were 40 ants on a rock. Some ants moved to the grass. Now there are 26 ants on the rock. How many ants moved to the grass?

• 66

• 14

65-24=

• 42

• 41

Spencer wrote 5 more stories than Katie. Spencer wrote 18 stories. How many stories did Katie write?

• 18-5=13

• 18+5=23

58-49=

• 9

• 19

76-68=

• 8

• 12

There are 46 game pieces in a box. Adam takes 38 game pieces out of the box. How many game pieces are still in the box?

• 46-38=8

• 46+8=54

62-口=37

口=

• 62+37=99

• 62-37=25

In 64-8, you could break apart in the number 8 before you subtract.

• tens

• ones

You can trade 1 ten for 10 ones when you .

• regroup

• tens

Keisha had a box of ribbons. She took 29 ribbons out of the box. Then there were 17 ribbons still in the box. How many ribbons were in the box to start?

• 29-17= 口, 口= 12

• 口-29=17, 口= 17+29=46