write 5 numbers between 640 and 740 which can be approximated to 700 nearest to their hundred?
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Answer:
This number line has the whole tens marked (720, 730, and so on). Let's think about all of the numbers between 740 and 750. Which of them are nearer to 740 than to 750?
Which ones are nearer to 750?
Rounding a number to the nearest ten means finding which whole ten the number is closest to. We use the symbol ≈ when rounding. Read it as “is approximately” or “is about”.
Read the examples below. They are also illustrated on the number line with arrows.
731 ≈ 730
(731 is approximately 730)
767 ≈ 770
(767 is about 770)
724 ≈ 720
(724 is approximately 720)
Numbers that end in 1, 2, 3, or 4 are rounded down to the previous whole ten.
Numbers that end in 5, 6, 7, 8, and 9 are rounded up to the next whole ten.
Notice that numbers ending in 5 are rounded up even though actually they are as far from the previous whole ten as they are from the next whole ten. For example, 855 is equally far away from 850 as it is from 860, but 855 ≈ 860 when rounding to the nearest ten.
1. Round the numbers to the nearest whole ten. Use the number line to help.
Answer:
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