ANSWERS:

(1) 1

(2) Zero

(3) Seventy-four hundredths

When rounding off decimals, the rule is that if the decimal is 4 or less you round down to zero

and if the decimal is 5 or more you round up to the next higher number.

Example 1: Round off 109.6536 to two decimal places.

(1) You look at the third decimal which is 3 and apply the rounding off rule.

(2) Since 3 is "4 or less," you round down to zero; this will not affect the preceding decimal.

(3) The answer, therefore, would be 109.65.

Example 2: Round off 109.2721 to one decimal place.

(1) You look at the second decimal which is 7 and apply the rounding off rule.

(2) Since 7 is "5 or more," you round up to the number 10 which will carry over to the preceding

decimal and increase it by 1.

(3) The answer, therefore, would be 109.3.

NOTE: Rounding off a one-decimal number would carry back to the whole number: 96.5 would be 97,

but 96.3 would be 96. Now, you round off some decimals.

(1) Round off decimals to two decimal places.

64.6581

1648.1243

(2) Round off decimals to one decimal place.

691.9265

76.2725

(3) Round off the following numbers.

54.3

68.9

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