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. Using the rounding off technique, find the rough estimated difference of the given decimals.
19. 634.58 – 436.79
20. 37.86 – 19.92
21. 14.39 – 8.59
22. 7.45 – 2.93

Sagot :

Answer:

19. 188

20. 18

21. 5

21. 4

Step-by-step explanation:

634.58 would round up to 635 and 436.79 would round up to 437.

20. 37.86 would round up to 38 and 19.92 would round up to 20.

21. 14.49 would round to 14 and 8.59 would round up to 9.

22. 7.45 would round down to 7 and 2.93 would round up to 3.

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