Power of Zero
Subtraction With Regrouping
3/4-Digit Addition With Regrouping
3/4-Digit Subtraction With Regrouping
Surprise!
100

9x40

360

100
97-18=
79
100
296+370=
666
100
503-363=
140
100

Estimate to the nearest ten 349-156=

190

200

Find 800 × 6

4,800

200
83-47=
36
200
511+396=
907
200
678-296=
382
200

Estimate the product 8 × 939.      

7,200

300

There are 70 children each, in grades 3, 4, 5, and 6. How many children are there in all 4 of these grades?

280

300
92-63=
29
300

26,546+16, 214
























































































































































393+371=

42,760

300

7,842 − 3,516

4,326

300

Which is the best estimate of the product 3,780 × 2?

8,000

400
What does it mean to do when you see the word


"Product" 

Multiply

400
73-56=
17
400

23,698 + 572

24,270

400

9,000 − 3,476

5,524

400

A new computer costs $865. About how much would 11 computers cost? What is the best ESTIMATE

900X10 = 9,000

500

9x4,000

36,000

500
64-38=
26
500
754+197=
951
500

5,314 − 2,678=

2,636

500

Estimate  to the nearest hundred 500-245=

300

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