Subtraction with Double Regrouping
100-8
92
Check using addition:
518 - 203 =
315 + 203 = 518
Solve using chips on a place value chart.
704 + 159 =
863
_____= 502 - 138
364
500 - 255
245
Check using subtraction:
823 + 149 =
972 - 149 = 823
or
972 - 823 = 149
Solve using the vertical form.
521 + 388
909
_____ + 300 = 589
289
800 - 274
526
Check using subtraction:
567 + 239 =
806 - 239 = 567
or
806 - 567 = 239
Solve using chips on a place value chart.
934 - 166 =
768
650 - 170 = _____ - 200
680
906 - 368
538
Check using addition:
603 - 246 =
357 + 246 = 603
Solve using the arrow method:
480 - 152 = ____
328
550 - 240 = 210 + ______
100
703 - ____ = 255
448
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
Solve using any method!
387 + 565 =
952
800 - _____ = 700 - 426
526