ANSWERS:
1.
a. line up
b. lined up
2.
a. decimal points
b. decimal points
We may place zeros after the last number in a decimal without changing its value.
The value of a decimal is not changed when we place
after the last number
in the decimal.
If we place a zero after the "4" in .64 and make it .640, have we changed the value of the
decimal? (Yes or No)
Since placing zeros after the last number in a decimal does not change its
, we
may use these zeros to make our addition or subtraction example clearer:
.65 )
.640
.912 )
.912
.9
)
becomes
.900
+ .47 )
+ .470
__________
_______
(do not add)
(do not add)
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