pick your own strategy
Use the arrow way
draw place value chart and show the subtraction method to show your work.
draw place value chart and show the addition method to show your work.
Find the missing number to make the statement true
100

560+300=

860

100

    -400          +20

830--->_____---> ______

830 -______=_________

450

100


solve using place value chart and check using subrtaction:

328+294=

622

100

Draw a place value chart and check your work using addition:

718-239=

479
100

300-167=

133

200

440-290=

150

200

      -___           +_____

670---> 270---->290

670 -______=290

-400, +20

380

200

solve using place value chart and check using subrtaction:

546+394=

940

200

Draw a place value chart and check your work using addition:

400-259=

141

200

671-398=

273

300

=730-270

460

300

     -400         -40

___--->______----> 218

_____ -440=218

658,258

658

300

solve using place value chart and check using subrtaction:

361+547=

908

300

Draw a place value chart and check your work using addition:

500-387=

113

300

____=608-259

349

400

750+167=

917

400

       -200           -30

____--->______---->569


_____- 230=569

339

400

solve using place value chart and check using subrtaction:

687+279=

966

400

Draw a place value chart and check your work using addition:

800-486=

314

400

____=900-367

533

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