Dividing Decimals by Whole Numbers

Dividing Decimals by Whole Numbers Mrs. Sherwood

Today we will… • Divide a decimal by a whole number. • Show a remainder as a decimal. • Round a decimal to the nearest tenth.

Step 1 Place the decimal point in the quotient above the decimal point in the dividend. .

Step 2 Divide as with whole numbers. 6.6 -24 24 24 - 0

Step 3 Check your answer. Multiply the quotient by the divisor. Your answer should be the dividend. 6.6 X 4 26.4

Now try these two. 42.8 2.61 How did you do?

Dividing Whole Numberswith a Decimal Quotient Step 1: Think: Instead of leaving a remainder, add zeros to the dividend and continue to work the problem until your remainder is zero. 6 -120 10

Showing the Remainder as a Decimal. Step 2: Place the decimal point in the quotient above the decimal point in the dividend. Add a zero to the dividend. Continue dividing. -120 100 -100

Now you try. Hint:You may need to add more than one zero!

Check your answers. -36 -8 10 46 -8 -40 20 60 -56 -20 40 -40

Let’s try rounding to the nearest 10th. • Look at the number to the right of the number in the 10ths place. • If it is 0, 1, 2, 3, or 4, round down. • If it is 5, 6, 7, 8, or 9, round up. • .925 rounds to .9 .925 .9 3.5 3.467 26.45 26.5 4.01 4 325.23 325.2

Great Job!

Dividing Decimals by Whole Numbers