2.8 Review

During the first week of school, 345 students bought their lunch. During the second week of school, 23 fewer students bought their lunch than the week before. How many students bought their lunch in those two weeks?

• 322

• 368

• 667

• 713

On Monday, 117 students signed up to plant trees in the park. On Tuesday, 16 fewer students signed up than on Monday. How many students signed up to plant trees on Monday and Tuesday?

• 218

• 158

• 118

• 101

In one week, 103 students were absent. The next week, 17 fewer students were absent than the week before. How many students were absent in those two weeks?

• 86

• 120

• 189

• 223

For two days, Imani counted taxis that passed her house from 4:30 to 4:45 p.m. She counted 33 taxis on Monday. That was 19 fewer than the number of taxis she counted on Tuesday. How many taxis did Imani count on both days?

• 14

• 33

• 52

• 85

Penn drew bar models to solve 45 + 92 = __ and 92 – __ = 45. Explain why I wrote those problems.

• Addition and subtraction are related and you can check your answers.

• I just did it.

345 - 183

• 242

• 162

• 252

• 582

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

752 - 547

• 205

• 215

• 1299

• 115

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

489 - 296

• 213

• 293

• 785

• 193

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

630 - 319

• 949

• 321

• 311

• 329

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

553 - 246

• 307

• 317

• 799

• 313

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7