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Find the expression which has a sum nearly equal to 60.

  • A

    28 + 48

  • B

    49 + 19

  • C

    17 + 37 

  • D

    64 + 52

The correct answer is "17 + 37".


Solution:
To find the correct answer, we find the sum of each expression by rounding (up or down) the addends.

At Option A:
Round the addends to the nearest tens and then add.

28  +  48  =  ?
↓          ↓
30  +  50  =  80

This expression has a sum nearly equal to 80.


At Option B:

49  +  19  =  ?
↓           ↓
50  +  20  =  70

This expression has a sum nearly equal to 70.


At option C:

17  +  37  =  ?
↓          ↓
20  +  40  =  60

This expression has a sum nearly equal to 60.


At the last option D:

64  +  52  =  ?
↓          ↓
60  +  50  =  110

This expression has a sum nearly equal to 110.


So, the desired answer is "17 + 37".