Add it up!
120 + 150
270
300 − 120
180
150 + ___ = 200
50
Ms. Gervacio has 230 books in her classroom. She buys 60 more. How many books does she have now?
290
Estimate 312 + 289
Estimate: about 600 → Exact: 601
240 + 130
370
450 − 210
240
400 − ___ = 250
150
Ms. Villarreal’s class has 420 apples for a snack. They eat 150. How many apples are left?
270
Estimate 654 − 327
Estimate: about 300 → Exact: 327
310 + 165
475
620 − 315
305
___ + 125 = 300
175
Mr. Panasy has 305 students on the playground. 120 more come outside. How many students are there now?
425
Estimate 497 + 205
Estimate: about 700 → Exact: 702
425 + 174
599
500 − 187
313
650 − ___ = 400
250
Ms. Hernandez has 500 pencils and gives away 185. How many pencils does she have left?
315
Estimate 820 − 418
Estimate: about 400 → Exact: 402
388 + 212
600
700 − 254
446
___ + 275 = 500
225
Ms. Nurinda’s class collects 260 bottle caps for a project. Dr. McLemore brings 245 more. How many bottle caps do they have in all?
505
Estimate 365 + 499
Estimate: about 900 → Exact: 864