Explain how using basic facts can help you find 10x20x30x40 mentally

Mathematics

2 answers:

natulia [17]3 years ago

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1*2*3*4*10000
6*4*10000
24*10000
240000

11111nata11111 [884]3 years ago

3 0

Hi Softballgirl6! I would say that first, we could pretend that the zeros don't exist because we could add those in later. Then just working with 1x2x3x4, we could mentally solve this to 24 and then add in the extra 4 zeros that we left out at the beginning. This brings the answer to 240000. Hope this helps! :)

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A 1 mile hiking path has signs placed every 240 ft there are signs at the beginning of the path and the end how many signs are t

dlinn [17]

Answer: 22 signs

Step-by-step explanation:

First find out how many feet are in a mile.

A mile = 5,280 feet

There are signs every 240 ft so the number of signs are:

= 5,280/240

= 22 signs

There is a sign at the beginning and one at the end both of which are already account for in the 22.

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