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nlexa [21]
3 years ago
12

When you use place value to exchange equal amounts when renaming a number what are you doing?

Mathematics
2 answers:
Monica [59]3 years ago
7 0
Using place value to exchange equal amounts is called rounding
Sati [7]3 years ago
6 0
Rounding is what it's called.
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We have 40% antifreeze and 70% antifreeze and we need to make 240 liters of 64% antifreeze.

We set up 2 equations where "f" is the 40 % and "s" is the 70%

A) f + s = 240

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To solve both equations we multiply A) by -.40

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48 liters of 40% = 19.20 liters of antifreeze

192 liters of  70% = 134.40 liters of antifreeze

That equals 153.60 liters of antifreeze in a TOTAL liquid amount of 240 liters.

Double Check

153.60 / 240 = 64% antifreeze.

Step-by-step explanation:

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