Show:
Subtraction with Double Regrouping
Check your work!
Methods
Addition & Subtraction
100

100-8

92

100

Check using addition:


518 - 203 = 

315 + 203 = 518

100

Solve using chips on a place value chart.


704 + 159 =

863

100

_____= 502 - 138

364

200

500 - 255

245

200

Check using subtraction:


823 + 149 = 

972 - 149 = 823

or

972 - 823 = 149

200

Solve using the vertical form.


521 + 388

909

200

_____ + 300 = 589

289

300

800 - 274

526

300

Check using subtraction:


567 + 239 = 

806 - 239 = 567

or

806 - 567 = 239 

300

Solve using chips on a place value chart.


934 - 166 = 

768

300

650 - 170 = _____ - 200

680 

400

906 - 368 

538

400

Check using addition:


603 - 246 = 

357 + 246 = 603

400

Solve using the arrow method:


480 - 152 = ____

328

400

550 - 240 = 210 + ______

100

500

703 - ____ = 255

448

500

I solved 506 - 299 and got 201, what did I do wrong?

I did not regroup correctly in the ones place. I added 6 + 10 = 10 instead of 6 + 10 = 16

500

Solve using any method!


387 + 565 = 

952

500

800 - _____ = 700 - 426 

526