Subtracting

Use the break it apart strategy to subtract.

762 - 142

• 600

• 610

• 620

• 640

Use the break it apart strategy to subtract.

947 - 632

• 900 - 600, 300 - 40, 260 - 2, 258

• 947 - 600, 347 - 30, 317 - 2, 315

• 947 - 632 = 315

• 900 + 40 + 7 - 600 + 30 + 2

Use the make a ten strategy to subtract.

724 - 399

• 300

• 425

• 400

• 325

Use the make a ten strategy to subtract.

371 - 201

• 371 -1 = 370, 201 + 1 = 202, 370 - 202 = 168

• 371 - 1 = 370, 201 - 1 = 200, 301 - 200 = 170

• 371 - 201 = 170

• 371 - 1 = 370, 201 - 1 = 200, 301 - 200 = 101

Use base ten blocks to model the subtraction.

632 - 471

• 160

• 181

• 175

• 161

Use base ten blocks to model the subtraction.

1,253 - 864

• 387

• 386

• 389

• 388

Estimate. Round to the nearest 10.

1,253 - 1008

• 100

• 120

• 300

• 240

Subtract.

2,721 - 1,023

• 1,678

• 1,698

• 1,700

• 1,640

Subtract.

6,821 - 4,934

• 1,987

• 1,787

• 1,387

• 1,887

Subtract.

9,735 - 6,821

• 2,914

• 3,914

• 1,914

• 2,947