Download presentation

Presentation is loading. Please wait.

Published byJustina Moore Modified over 8 years ago

1
Splash Screen

2
Lesson Menu Five-Minute Check (over Lesson 3–8) Main Idea Example 1:Divide by Decimals Example 2:Zeros in the Quotient and Dividend Example 3:Zeros in the Quotient and Dividend Example 4:Round Quotients

3
Main Idea/Vocabulary Divide decimals by decimals.

4
Example 1 Divide by Decimals Find 59.4 ÷ 3.6. Place the decimal point. Divide as with whole numbers. Annex a zero to continue. Estimate60 ÷ 4 = 15 1 –36 4 6 –216.5 0 –180 0 23 18 → Multiply by 10 to make a whole number. Multiply by the same number, 10. 0

5
Example 1 Divide by Decimals Check16.5 × 3.6 = 59.4 Answer: 59.4 divided by 3.6 is 16.5. Compare to the estimate. Interactive Lab: Dividing Decimals

6
1.A 2.B 3.C 4.D Example 1 A.1.35 B.1.42 C.13.5 D.14.2 Find 72.9 ÷ 5.4.

7
Example 2 Zeros in the Quotient and Dividend Find 8.1 ÷ 0.054. Answer: So, 8.1 ÷ 0.054 = 150. Place the decimal point. Write a zero in the ones place of the quotient because 0 ÷ 54 = 0. 1 –54 0 5 –270 0. 0 27 0 → Check150 × 0.054 = 8.1 Multiply each by 1,000.

8
1.A 2.B 3.C 4.D Example 2 A.13.0 B.13.3 C.130 D.133 Find 81.9 ÷ 0.63.

9
Example 3 Zeros in the Quotient and Dividend Find 0.052 ÷ 1.3. Answer: So, 0.052 ÷ 1.3 = 0.04. Place the decimal point. 13 does not go into 5, so write a 0 in the tenths place. → Check0.04 × 1.3 = 0.052 Multiply each by 10. 0 –0 5.0 –00 4 2 –52 0 0 5

10
1.A 2.B 3.C 4.D Example 3 A.0.006 B.0.06 C.0.07 D.6 Find 0.072 ÷ 1.2.

11
Example 4 STOCK Leon bought a stock at $42.88 per share. If he spent $786.85, how many shares did he buy? Round to the nearest tenth. Find $786.85 ÷ $42.88. Round Quotients Multiply the divisor and the dividend by 100.

12
Example 4 Answer: To the nearest tenth, 786.85 ÷ 42.88 = 18.4. So, Leon was able to buy about 18.4 shares. Round Quotients → 1 –4288 5 8 –34304.3 0 –12864 5 3580 1501 –21440 21460 20 00

13
1.A 2.B 3.C 4.D Example 4 A.32.6 B.32.8 C.36.2 D.36.4 STOCK Kyle bought a stock at $23.55 per share. If he spent $771.28, how many shares did he buy? Round to the nearest tenth.

14
End of the Lesson

15
Resources Five-Minute Check (over Lesson 3–8) Image Bank Math Tools Modeling Decimals Dividing Decimals Modeling Decimals

16
1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 3-8) Find 12.89 ÷ 10. Round to the nearest tenth if necessary. A.0.1289 B.1.2 C.1.3 D.1.389

17
1.A 2.B 3.C 4.D Five Minute Check 2 (over Lesson 3-8) Find 82.5 ÷ 3. Round to the nearest tenth if necessary. A.24.15 B.24.75 C.27.5 D.28.80

18
1.A 2.B 3.C 4.D Five Minute Check 3 (over Lesson 3-8) Find 7.2 ÷ 6. Round to the nearest tenth if necessary. A.1.2 B.1.3 C.1.44 D.13.2

19
1.A 2.B 3.C 4.D Five Minute Check 4 (over Lesson 3-8) Find 4.36 ÷ 4. Round to the nearest tenth if necessary. A.1.18 B.1.1 C.1.4 D.1.5

20
1.A 2.B 3.C 4.D Five Minute Check 5 (over Lesson 3-8) If $7.85 is to be divided equally among 5 people, how much does each person get? A.$1.47 B.$1.50 C.$1.57 D.$1.87

21
1.A 2.B 3.C 4.D Five Minute Check 6 (over Lesson 3-8) What is the mean of this set of gymnastic scores? 7.4, 7.1, 3.3, 9.1, 8.2 A.7.1 B.7.05 C.7.02 D.7.01

22
End of Custom Shows

Similar presentations

© 2023 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google