3 years ago

How is using mental math to add with decimals like using mental math to add whole numbers

1 answer:

8 0

Add them up just the same, then add the decimal point in the proper position; once you hit the hundreds position, it is a whole number. I.E. 300=.3

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Circle the problems below that you could use mental math to solve.

SashulF [63]

I think this is more of an opinion question. What someone could solve mentally may not be the same as someone else's.If it were my worksheet, I'd circle all of them but it may be different for you.
At your level, I'd probably circle:
54 - 10
93 - 20
and 39 - 2

4 0

2 years ago

Is any pair of equilateral triangles similar to each other? Why or why not?

myrzilka [38]

Answer:

They are similar because Since all the sides are equal in each triangle, the ratio of corresponding sides will all be equal

Step-by-step explanation:

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3 years ago

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Alja [10]

Answer:

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Step-by-step explanation:

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2 years ago

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Arturiano [62]

Answer:

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2 years ago

Ted can mow the lawn in 5 minutes by using his power mower. Galen takes 15 minutes to mow the same lawn using a push-type mower.

EastWind [94]

We need to calculate a TIME. Here, TIME = job / rate

Here,

1 JOB 1 1
------------------------------------- = ------------------ = ---------------
JOB/5 min + JOB/15 min 1/5 + 1/15 3/15+1/15
1
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4/15

6 0

2 years ago

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