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Short Cycle Assessment #3 Review
DecimalsEquivalent DecimalsComparing DecimalsAdding & Subtracting
DecimalsProblem Solving with
Decimals
What is a decimal?
A decimal is a number that shows tenths, hundredths,Thousandths, and so on, by using a decimal point.
Introduction to Decimal Numbers!
Below is a WONDERFUL interactive lesson on Decimals. This link takes you to the homepage, so all you have to do is click on “Skip Intro”, then click on“Lessons” and then click on “1. Decimals”.
http://www.learnalberta.ca/Launch.aspx?content=%2fcontent%2fmesg%2fhtml%2fmath6web%2fmath6shell.html
Equivalent Decimals
http://www.hbschool.com/activity/con_math/g05c03.html
Equivalent Decimals are different names for the same amount.
Write an equivalent decimal for each.
0.8 0.80
1.70 1.7
0.900 0.9
15.08 15.080
Try this matching game: Find the equivalent decimals!!!
Comparing Decimal Numbers!
Line ‘Em Up
Solve. Explain your work.Put these decimals in order from least to greatest.
3.2 3.13 3.09 3.3 3.10
Answer is on the next slide!
3.09 Line up the decimal3.10 points and compare!3.133.20 Add Zeros to help you!3.30
Write about it:Are decimals with two digits to the right of the decimalpoint always greater than decimals with one digit to the right of the decimal point? Explain.
Click here to practice more with comparing decimals!http://www.bbc.co.uk/education/mathsfile/shockwave/games/laddergame.html
Adding & Subtracting Decimals
The most important thing to remember when adding & subtracting decimals is to ________________________
LINE UP THE DECIMAL POINTS!!!
4.8 + 3.3 =
12.45 + 8.46 =
9.5 - 6.7 =
62.32 - 3.38 =
8.1
20.91
2.8
58.94
Problem Solving With Decimals
When it comes to problem solving you have to:
1. UNDERSTAND
2. PLAN
3. SOLVE
4. LOOK BACK
Let’s Practice, Shall We!!!
Try this one first
http://www.kidzone.ws/math/wp/halloweenwp4.asp
Take another look at Fractions! REMEMBER TO SHOW WORK AND DON’T GIVE UP!!!
http://www.iknowthat.com/com/L3?Area=FractionGame
Check out these sites on how decimalsAnd fractions relate!
On the website below, Click on “Fraction and Decimal Match!”And then begin matching the decimal to the
Fractions before time runs out!!!
http://www.amblesideprimary.com/ambleweb/mentalmaths/fracto.html
“The Decifractator”: This website allows you to create your ownfraction and then change it to a decimal!
http://pbskids.org/cyberchase/games/decimals/decimals.html
Someone has removed some of the tracks on the Trans-cyberspace Railroad! Its up to you to repair the Tracks so the train can get back to Central Station.You’ll need to drag tracks to fill the missing spaces!GOOD LUCK!
http://pbskids.org/cyberchase/games/decimals/decimals.html