How to Calculate Quickly by Henry Sticker

Author:Henry Sticker
Language: eng
Format: epub
Publisher: Dover Publications

Exercise No. 280

Mental Multiplication

Multiply mentally by 250 the numbers in Table I on page 7.

Exercise No. 281

Subtraction of Fractions

Review the examples in Exercise No. 273 on page 102 and No. 277 on page 103.Also perform the following subtractions.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Exercise No. 282

Mental Division

Divide mentally the following. Express remainders as such instead of as fractions.

1. 328 ÷ 121

2. 593 ÷ 232

3. 794 ÷ 343

4. 1249 ÷ 451

5. 1580 ÷ 562

6. 1835 ÷ 623

7. 1774 ÷ 731

8. 1786 ÷ 842

9. 2114 ÷ 953

10. 439 ÷ 161

11. 406 ÷ 131

12. 776 ÷ 242

13. 1164 ÷ 353

14. 1574 ÷ 464

15. 1998 ÷ 571

16. 690 ÷ 141

17. 1208 ÷ 252

18. 1704 ÷ 363

19. 2178 ÷ 474

20. 2620 ÷ 585

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