To do a quick estimate in your head, the idea is to round each number to the nearest multiple of 10, in this case (i.e., to one significant figure). 34 is closer to 30 than to any other multiple of 10; 59 is closest to 60. It should now be easy to add 30 + 60 in your head.
To do a quick estimate in your head, the idea is to round each number to the nearest multiple of 10, in this case (i.e., to one significant figure). 34 is closer to 30 than to any other multiple of 10; 59 is closest to 60. It should now be easy to add 30 + 60 in your head.
To do a quick estimate in your head, the idea is to round each number to the nearest multiple of 10, in this case (i.e., to one significant figure). 34 is closer to 30 than to any other multiple of 10; 59 is closest to 60. It should now be easy to add 30 + 60 in your head.
To do a quick estimate in your head, the idea is to round each number to the nearest multiple of 10, in this case (i.e., to one significant figure). 34 is closer to 30 than to any other multiple of 10; 59 is closest to 60. It should now be easy to add 30 + 60 in your head.
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To do a quick estimate in your head, the idea is to round each number to the nearest multiple of 10, in this case (i.e., to one significant figure). 34 is closer to 30 than to any other multiple of 10; 59 is closest to 60. It should now be easy to add 30 + 60 in your head.
300+60=360
2048
4+1=5. Plus 4 equals 9. Plus 77685769844446473 equals 77685769844446482. Plus 3 equals 77685769844446485. Plus 8 equals 77685769844446493. Plus 1 equals 77685769844446494. Plus 9870998342523322424 equals 1064785604097768918. Plus 4 equals 1064785604097768922.
It is the property that equals plus equals are equals.
the answer is a