Download presentation

Presentation is loading. Please wait.

1
**Rounding Decimal Numbers**

Sometimes close enough is good enough!

2
**Molly has $16 in her pocket**

She buys: 3 $1.89 each 3 $2.19 each 3 Large French $ $1.79 each Does she have enough money?

3
**About how much will it cost to fill up?**

Gas costs $1.79 per gallon I’m running on empty and I have a 20 gallon tank on my truck…… About how much will it cost to fill up?

4
**You have one hour to take a 50 question test.**

About how much time can you spend on each question? Close enough is good enough!

5
**The rounding poem Find your number Look right next door**

4 or less, just ignore 5 or more add one more!

6
**Rounding Whole Numbers**

Round 474 to the closest hundred. 474 Find your number Look right next door Four or less, just ignore Five or more, add one more

7
**474 Rounded to the hundreds becomes 500**

Round 474 to the closest 10’s 474 Just ignore - 470

8
Try These 4,215 394 27 127,591 638

9
**What about decimal numbers**

The same rules (and poem) apply! Round to the closest hundredths 4.167 Find your number Look right next door 4.17

10
Remember If you are asked to round to the nearest tenth…….your answer stops at the tenth place! Example: Round to the closest tenth would be 42.7

11
**Special Case! Rounding a 9**

Round to the closes hundredths Since there is a “9” in the hundredths place consider the tenth and hundredths together – 19 – do you leave it at 19 or move it to 20?

12
**Round 4.95 to the closest tenth**

Since there is a “9” in the tenth spot consider the ones and tenths together…… should you leave it at 49 or move it to 50? 4.95 rounded to the nearest tenth is 5.0

13
**Try these 4.56 4.6 5.32 5.3 0.98 1.0 Round to hundredths**

Round to tenths: 4.56 4.6 18.784 18.78 5.32 5.3 9.46 9.456 10.00 0.98 1.0 9.997

14
Homework Page 600 Lesson 3-3 at the top of the page 1-20

Similar presentations

Presentation is loading. Please wait....

OK

Topic 9 Lessons 9-8, 9-9, 9-10.

Topic 9 Lessons 9-8, 9-9, 9-10.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on earth damage Ppt on state government of india Ppt on grid connected pv system Ppt on fire extinguisher types charts Ppt on transcription and translation Ppt on energy giving food meaning Convert free pdf to ppt online converter Ppt on english chapters of class 10 Ppt on law of conservation of mass Ppt on taj mahal agra