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34kurt
3 years ago
15

Use mental math to find the sum of 43 and 57

Mathematics
2 answers:
Feliz [49]3 years ago
6 0

Answer: 100

Step-by-step explanation:

You know that 3+7=10

You know that 40+50=90

90+10=100

Vedmedyk [2.9K]3 years ago
3 0

Answer:

100

Step-by-step explanation:

43+57=100

I added 3+7=10

Then 40+50=90 and added them

90+10=100

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Step-by-step explanation: the scuba diver starts at sea level (0) then swims down 30 feet (-30). after a couple minutes, goes down 10 feet more (-40) the scuba diver will now be -40 down from sea level. so it should be -40 because the scuba diver swam that much down.

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3 0
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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This can be solved by:

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3 0
2 years ago
10 + (2 x 3)2 ÷ 4 × 1 over 2 to the power of 3
Zielflug [23.3K]

Answer:

1.4375

Step-by-step explanation:

\frac{10 + (2 x 3)^{2} / (4)(1)}{2^{3}} \\

\frac{10 + (6)^{2} /4}{8} \\

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Step-by-step explanation:

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