Question

Estimate the answer by rounding. 84 - 18

Answer 1

rounding to what factor?

Answer 2

84-18 would be the same as 84-20+2

Answer 3

A. 66

B. 100

C. 70

D. 60
heres the choices

Answer 4

66 rounded to tens would give you 70

Answer 5

do you understand why?

Answer 6

no would you mind explaining if not thanks a lot for the help

Answer 7

so this topic is about place value
if we have 23
we have two place values
ones for 3
tens for 2

if we have 345
we have 3 place values
5 ones
4 tens
3 hundreds

so our place values without decimals are
ones, tens, hundreds, thousands, ten-thousands, hundred-thousands... so on and so forth

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