Maths topic · Ireland
Decimals and percents
Tenths and hundredths, place value after the point, and percents as parts of 100.
Lessons
Third Class to Fourth ClassMaths
Fair Shares: Fractions and Decimals
Is half always the same size? Where does three-quarters stand? Why is 3/4 + 2/4 not 5/8? Who jumped further, 1.4 m or 1.35 m? Four hands-on lessons where students fold, stand on a giant number line, measure recipes and measure their own jumps to make sense of fractions and decimals.
Sixth Class to First YearMaths
Mix It, Pace It: Ratio, Rate and Percent
Why doesn't the big batch of paint match? Who walks fastest? Is the bigger pack or the bigger percent off really the better deal? Does twice the time mean twice the distance? Four lessons where students mix, walk, shop and graph their way to ratios, unit rates, percents and proportional relationships.
Online practice
- Compare decimals: tenths to 10 Fourth Class
- Compare decimals: tenths to 100 Fourth Class
- Add decimals: tenths Fourth Class
- Subtract decimals: tenths Fourth Class
- Add tenths and hundredths as fractions Fourth Class
- Write tenths and hundredths as decimals Fourth Class
- Write decimals as fractions Fourth Class
- Value of a digit in a decimal Fourth Class
- Which decimal is the greatest? Fourth Class
- Compare decimals: hundredths to 10 Fifth Class
- Compare decimals: hundredths to 100 Fifth Class
- Add decimals: hundredths Fifth Class
- Subtract decimals: hundredths Fifth Class
- Add decimal distances: word problems Fifth Class
- Multiply decimals by 10, 100 and 1,000 Fifth Class
- Divide decimals by 10, 100 and 1,000 Fifth Class
- Value of a digit in a decimal Fifth Class
- Order decimals to thousandths Fifth Class
- Round decimals to the nearest whole number Fifth Class
- Round decimals to the nearest tenth or hundredth Fifth Class
- Multiply a decimal by a whole number Fifth Class
- Multiply decimals Fifth Class
- Divide a decimal by a whole number Fifth Class
- Divide a decimal by a decimal Fifth Class