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Do You Know How? In 3-8, estimate each product using rounding or compatible numbers. 4. 104 x 0.33 3. 0.87 x 112 0.90x110=99 6. 0.54 x 24 5. 9.02 x 80 9x80=720 7. 33.05 x 200 a. 0,79 x 51

Do You Know How In 38 Estimate Each Product Using Rounding Or Compatible Numbers 4 104 X 033 3 087 X 112 090x11099 6 054 X 24 5 902 X 80 9x80720 7 3305 X 200 A class=

Sagot :

Estimating Products

Some operations can be estimated and its results approximated by using rounding and number that are easier to calculate.

For example the product 0.87*112 can be estimated by using 0.9 (a very close rounded number) and 110 instead of 112. One of the factors was rounded up and the other was rounded down. The product should be very close to the real exact product.

Now for 104*0.33. 104 can be rounded to 100 and it can be easily multiplied by 0.33. 100*0.33 = 33

0.54*24 can be estimated as 0.5*26=13 or as 0.6*30=18

33.05*200 is approximated as 33*200 = 6600

0.79*51 is estimated as 0.8*50 = 400

Some of the estimations above can be challenged and some people can propose better combinations for more accurate results. It's a subjective task.

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