EXERCISE 1E
Estimate each of the following products by rounding off each number to the nearest ten:
1. 38 x 63
2. 54 x 47
3. 28 x 63
4. 42 x 75
5. 64 x 58
6. 15 x 34
Answers
Answered by
1
38 is rounded off to the nearest tens=40
63 is rounded off to the nearest tens=60
Estimate product= 40×60=2400
Actual product=38×63=2394
And same as others.
Please follow me
Answered by
2
Answer:
Here is your answer
Step-by-step explanation:
1. 38 round off - 40, 63 round off - 60
40 × 60 = 2400
2. 54 = 50, 47 = 50
50 × 50 = 2500
3. 28 = 30, 63 = 60
30 × 60 = 1800
4. 42 = 40, 75 = 80. [ The no with last digit 5 round off will be the next no.]
40 × 80 = 3200
5. 64 = 60, 58 = 60
60 × 60 = 3600
6. 15 = 20, 34 = 30
20 × 30 = 600
Similar questions