Addition
270 + 158 =
428
530 - 290 =
240
25 + 175 = 50 + 200
True or False, show your work.
False
200 = 250 is not right
Write the other addition sentence to this problem
431 + 192 = 623
192 + 431 = 623
____= 340 + 360
700
784 - 495
289
125 + 236 = 361 + 111
True or False - Show your work
False
361 = 472 is not correct.
Write the other subtraction problem in this fact family.
821 - 341 = 480
821 - 480 = 341
____= 466 + 235
701
326 - 298 = 128
Solve and show what I did wrong.
326 - 298 = 28
I didn't subtract the hundreds correctly.
149 + 111 = 100 + 160
True or False show your work.
True
260 = 260
Write an addition problem that is in this fact family.
321 - 181 = 140
140 + 181 = 321
or
181 + 140 = 321
Arrow method solve this problem: #1
Flipchart #1
Arrow method solve this problem: #3
Flipchart #3
524 - 124 = 400 - 202
True or False, show your work
False
400 = 198 is not right.
Write a subtraction problem in this fact family.
523 + 135 = 658
658 - 523 = 135
or
658 - 135 = 523
Arrow method solve this problem: #1
Flipchart #2
Arrow method solve this problem: #4
Flipchart #4
824 - 429 = 595 - 200
True or false, show your work
True
395 = 395
Write 2 subtraction sentences that is in this fact family:
356 + 429 = 785
785 - 356 = 429
and
785 -429 = 356