Estimating Product and Quotient
The procedure of estimating product and quotient are in the following examples.
Solved examples to estimate product and quotient:
1. Estimate the product 958 × 387 by rounding off each factor to its greatest place.
Solution:
Clearly, each factor is a three digit number. So, we round off each factor to nearest hundreds.
958 rounds off as 1000
387 rounds off as 400
Therefore estimated product = 1000 × 400 = 400000
2. Estimate the product to the nearest hundreds.
(i) 42 × 37
(ii) 67 × 62
(iii) 99 × 91
(iv) 147 × 51
(v) 193 × 47
Solution:
(i) 42 × 37 = 40 × 40 = 1600
(ii) 67 × 62 = 70 × 60 = 4200
(iii) 99 × 91 = 100 × 90 = 9000
(iv) 147 × 51 = 150 × 50 = 7500
(v) 193 × 47 = 190 × 50 = 9500
2. Find the estimated quotient 2838 ÷ 125 by rounding off the numerator and denominator to the nearest hundreds.
Solution:
We find that
2838 rounds off to nearest hundreds 2800
125 rounds off to nearest hundreds as 100
Therefore, estimated quotient = 2800 ÷ 100 = 28.
3. Estimate the quotient to the nearest tens.
(i) 87 ÷ 9
(ii) 163 ÷ 11
(iii) 461 ÷ 7
(iv) 1223 ÷ 17
Solution:
(i) 87 ÷ 9 = 90 ÷ 10 = 9 = 10
(ii) 163 ÷ 11 = 160 ÷ 10 = 16 = 20
(iii) 451 ÷ 7 = 460 ÷ 10 = 46 = 50
(iv) 1223 ÷ 17 = 1220 ÷ 20 = 61 = 60
● Estimate
6th Grade Page
From Estimating Product and Quotient to HOME PAGE
Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.
|
|
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.