Fill in the blanks :

(i) 839 rounded to nearest hundred is ……………

(ii) 83,867 rounded to nearest thousand is ……………

(iii) (368 + 143) to nearest ten is ……………

(i) The tens digit is 3, which is less than 5, so we round down.

Hence, 839 rounded to the nearest hundred is 800.

(ii) The hundreds digit is 8, which is 5 or greater, so we round up the thousands digit.

Hence, 83,867 rounded to the nearest thousand is 84,000.

(iii) The sum: 368 + 143 = 511.

Then, round 511 to the nearest ten. The units digit is 1, which is less than 5, so we round down.

Hence, 368 + 143 to the nearest ten is 510.