Question

Can you help on #5 I have to estimate & #5 simple yes or no please thank you

Answer 1

If you need an estimate for #5, then you can round each value to the nearest whole number to have...

• 21.6 turn into 21
• 20.9 turn into 21
• 19.4 turn into 19
• 18.5 turn into 19

Add up those values: 21+21+19+19 = 80

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Another estimate you could do is to round everything to 20, since we're close to this value. Having four copies of 20 added leads to 20+20+20+20 = 80

So they rode a total estimated amount of 80 miles

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The actual total is:  21.6+20.9+19.4+18.5 = 80.4 miles, which isn't too far off from 80.