Lessons 11 and 12
Lessons 13 and 14
Lessons 15 and 16
Lessons 17 and 18
Lessons 19 and 20
100

Solve using any strategy

422 + 160

582

100

Solve using any strategy.

445 − 53 = _______

392

100

Solve using any strategy.

758 − 387

371

100

Solve using any strategy.

200 − 113 = __________

87

100

Solve using any strategy.

760 − 28 = ____

732

200

Solve using the vertical way.

638 + 298 = _______

936

200

Solve using any strategy, then check your work with addition.

531 − 224

307

200

If 561 − 387 = 174, then 174 + ____ = 561.

387

200

Solve using the vertical method.

700 − 428 = __________

272

200

Solve using any strategy and explain why you chose that strategy.

227 + 183 = ______

410

300

Solve using a place value chart

424 + 288 = _______

712

300

Solve using 2 strategies.

927 − 628

299

300

Solve using any strategy.

543 + _____ = 780

237

300

Solve using a place value chart.

800 − 606 = __________

194

300

Solve using any strategy, then use addition to check your work.

913 − 558

355

400

Chris has 377 crayons. He bought 280 more. How many crayons does he have now?

Use any strategy to solve.

He has 657 crayons.

400

Jake bought 366 crawfish. He boiled 198 of them. How many crawfish does he have left?

Use any strategy to solve.

He has 168 crawfish left.

400

Emily said that 400 − 247 is the same as 399 − 246. Is she correct? Why or why not?

She is correct! They are both equal to 153.

400

Use the arrow way to solve.

600 − 465

135

400

Jim ran 168 less laps than Kelsey. Kelsey ran 500 laps. How many laps did Jim run?

Jim ran 332 laps.