Write the decomposition that you, and then round to the given place value. draw number lines to explain your thinking. circle the rounded value on each number line.
a. 43.586 to the nearest tenth, hundredth, and one.
b. 243.875 to nearest tenth, hundredth, ten, and hundred.

43.586 to the nearest tenth :43.6 , hundredth :43.59  , and one: .44

243.875 to nearest tenth :243.9  , hundredth :243.88, ten :240 and hundred :200

There are general rules used in rounding numbers

In rounding the nearest hundreds number, then we see the digit in the number tens (right of the digit hundreds), if it is worth 0, 1, 2, 3 or 4, then it remains, but if it shows numbers 5, 6, 7, 8 or 9, then the digit to be rounded is added one, and the right-hand side is 0

Calculated from the decimal point, the place on the right represents tents, hundredths, thousandths, etc.

a.  43.586

Decomposition

ten : 4

one : 3

tenth : 5

hundredth : 8

thousandths : 6

For the tenth number is 5, the value on the right is 8 then rounded become 43.6

For the hundredth number is 8, the value on the right is 6 then rounded become 43.59

for the one number is 3 , the value on the right is 5 then rounded become 44

b.243.875

Decomposition

hundred : 2

ten : 4

one : 3

tenth : 8

hundredth : 7

thousandths : 5

a. For the tenth number is 8, the value on the right is 7 then rounded become 243.9

For the hundredth number is 7, the value on the right is 5 then rounded become 243.88

For the ten number is 4, the value on the right is 3 then rounded become 240

For the hundred number is 2, the value on the right is 4 then rounded become  200

five numbers that are round up and round down to 600

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all the numbers that round to 50

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round 4,398,202 to the nearest 100

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Round number 4278649 to nearest 100

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Keywords: round up, round down, the rounded digit

b. f(x) = –√x + 3this is the correct answer