Multiplication
Division
Rounding
Addition
Subtraction
100

6x8

25

100

27/3

9

100

2,978 is about

3,000

100

25+300

325

100

300-25

275

200

7x5

35

200

25/5

5

200

4,500 is about

5,000

200

5,000+450

5,450

200

5,000-450

4,550

300

8x7

56

300

24/8

3

300

9,322 is about

9,000

300

10,065+9,876

19,941

300

10,065-9,876

189

400

10x9

100

400

10/80

8

400

10,111 is about

10,000

400

20,500+50,000

70,500

400

50,000-20,500

29,500

500

12x3

144

500

12/60

5

500

29,999 is about

30,000

500

100,500+200,500

400,000

500

200,500-100,500

100,000

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