Transcript Document
Short Cycle Assessment #3 Review Decimals Equivalent Decimals Comparing Decimals Adding & Subtracting Decimals Problem 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%2 fmath6shell.html Equivalent Decimals Equivalent Decimals are different names for the same amount. Write an equivalent decimal for each. 0.8 1.70 0.80 0.900 0.9 1.7 15.08 15.080 Try this matching game: Find the equivalent decimals!!! http://www.hbschool.com/activity/con_math/g05c03.html 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 Answer is on the next slide! 3.10 3.09 3.10 3.13 3.20 3.30 Line up the decimal points and compare! Add Zeros to help you! Write about it: Are decimals with two digits to the right of the decimal point 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!!! Check out these sites on how decimals And fractions relate! “The Decifractator”: This website allows you to create your own fraction and then change it to a decimal! http://www.amblesideprimary.com/ambleweb/ mentalmaths/fracto.html 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.iknowthat.com/com/L3? Area=FractionGame 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/ http://pbskids.org/cyberchase/games/ decimals/decimals.html