15
Question
Find the sum of 456 and 717 after rounding off them to the nearest tens.
Find the sum of 456 and 717 after rounding off them to the nearest tens.
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Solution
The correct option is C 1180
To round off a number to the nearest tens, if the units digit is greater than or equal to 5, then tens digit will be increased by 1 and units digit will be replaced by 0.
In 456, units digit is 6 which is greater than 5.
So, 456 is rounded off to 460.
In 717, units digit is 7 which is greater than 5.
So, 717 is rounded off to 720.
460 + 720 = 1180
Hence, sum of 456 and 717 after rounding off them to the nearest tens is 1180.
To round off a number to the nearest tens, if the units digit is greater than or equal to 5, then tens digit will be increased by 1 and units digit will be replaced by 0.
In 456, units digit is 6 which is greater than 5.
So, 456 is rounded off to 460.
In 717, units digit is 7 which is greater than 5.
So, 717 is rounded off to 720.
460 + 720 = 1180
Hence, sum of 456 and 717 after rounding off them to the nearest tens is 1180.
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