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23 October, 23:06

Directions: Estimate the sum or difference using front end estimation.

1) 97 - 39

2) 812,344 - 187,675

3) 321 + 79

Directions: Estimate the product using front end estimation.

4) 315 x 821

5) 562 x 791

6) 82 x 156

7) 711 x 884

8) 126 x 952

9) 824 x 541

10) 4027 x 78

11) 796 x 123

Directions: Estimate the quotient using front end estimation.

12) 817 19

13) 3615 72

14) 232 64

15) 559 81

16) 2986 222

17) 10275 232

18) 7428 286

19) 7143 369

20) 628,597 1525

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Answers (1)
  1. 23 October, 23:27
    0
    Step-by-step explanation:

    1) 1) 97 - 39. It becomes

    100 - 40 = 60

    2) 2) 812,344 - 187,675. It becomes

    800000 - 200000 = 600000

    3) 321 + 79. It becomes

    300 + 80 = 410

    4) 315 x 821. It becomes

    300 + 800 = 1100

    5) 562 x 791. It becomes

    600 * 800 = 480000

    6) 82 x 156. It becomes

    80*200 = 16000

    7) 711 x 884. It becomes

    700*900 = 630000

    8) 126 x 952. It becomes

    100*1000 = 100000

    9) 824 x 541. It becomes

    800 * 500 = 400000

    10) 4027 x 78. It becomes

    4000*80 = 320000

    11) 796 x 123. It becomes

    800*100 = 80000

    12) 817 19. It becomes

    800/20 = 40

    13) 3615 72. It becomes

    4000/70 = 57.1 = 60

    14) 232 64. It becomes

    200/60 = 33.3 = 30

    15) 559 81. It becomes

    600/80 = 7.5 = 8

    16) 2986 222. It becomes

    3000/200 = 15

    17) 10275 232. It becomes

    10000/200 = 50

    18) 7428 286. It becomes

    7000/300 = 23.3 = 20

    19) 7143 369. It becomes

    7000/400 = 17.5 = 18

    20) 628,597 1525, it becomes

    600000 - 2000 = 300
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