Vocabulary
Mental Math
Regroup Tens or Hundreds
Regroup Tens and Hundreds
Word Problems
100

When you subtract, is your answer more or less?

less

100

400-100

300

100

389-193

196

100

135-46

89

100

A store had 472 bouncy balls. They sold 155. How many bouncy balls were left?

317 bouncy balls

200

The answer to a subtraction problem

difference

200

700-700

0

200

289-196

93

200

152-98

54

200

There are 294 pages in a book. You read 149 of them. How many pages do you have left to read?

145 pages

300

You can ________ to find the difference

subtract

300

800-200

600

300

145-36

109

300

836-398

438

300

835 cows are in the field. 251 cows go into the barn. How many cows are still in the field?

584 cows

400

To __________ is to take apart a number and write it a new way

regroup
400

460-100

360

400

500-330

170

400

900-876

24

400

400 bees are in the hive. 145 bees leave the hive. How many bees are left in the hive?

255 bees

500

To identify the value of a digit, like the 5 in 50 or 500, use what you know about ___________

place value
500

693-10

683

500

754-507

247

500

500-321

179

500

500 people signed up for soccer. 123 people stopped playing. How many people are still playing soccer?

377 people

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