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max2010maxim [7]
4 years ago
9

Use properties and mental math to solve. 7.35+ 1.47+ 9.65=

Mathematics
2 answers:
horrorfan [7]4 years ago
5 0
I need help pls on my homework then I will help you
nlexa [21]4 years ago
5 0

Answer: Hello mate!

We have the equation 7.35+ 1.47+ 9.65

We can see that 35 + 65 = 100, so we could do this:

7.35+ 1.47+ 9.65 = (7.35+ 9.65) + 1.47 = (7 + 0.35+ 9 + 0.65) + 1.47 = (7 + 9 + (0.35 + 0.65)) + 1.47 = (7 + 9 + 1) + 1.47 = 17 + 1.47 = 18.47

Is always useful to look for numbers that "fit" and add them first.

With "fit" i mean that the numbers add to 1, 10 or something that is easier to handle.

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