Question

do these problems in your head. use paper only for the problems that you do as many of these problems without paper as you can. do not use a calculator at all. all of the following problems are division problems. 57.2 ÷ 10 = 8373.5 ÷ 10 = 3.9 ÷ 10 = 9.5 ÷ 100 = 63.9 ÷ 1000 = 0.89 ÷ 10 = 5 ÷ 100 = 96 ÷ 1000 = 88 ÷ 100 =

Explanation:

Step1: Divide by 10, shift decimal left 1

$57.2 \div 10 = 5.72$

Step2: Divide by 10, shift decimal left 1

$8373.5 \div 10 = 837.35$

Step3: Divide by 10, shift decimal left 1

$3.9 \div 10 = 0.39$

Step4: Divide by 100, shift decimal left 2

$9.5 \div 100 = 0.095$

Step5: Divide by 1000, shift decimal left 3

$63.9 \div 1000 = 0.0639$

Step6: Divide by 10, shift decimal left 1

$0.89 \div 10 = 0.089$

Step7: Divide by 100, shift decimal left 2

$5 \div 100 = 0.05$

Step8: Divide by 1000, shift decimal left 3

$96 \div 1000 = 0.096$

Step9: Divide by 100, shift decimal left 2

$88 \div 100 = 0.88$

Answer:

$57.2 \div 10 = 5.72$
$8373.5 \div 10 = 837.35$
$3.9 \div 10 = 0.39$
$9.5 \div 100 = 0.095$
$63.9 \div 1000 = 0.0639$
$0.89 \div 10 = 0.089$
$5 \div 100 = 0.05$
$96 \div 1000 = 0.096$
$88 \div 100 = 0.88$