Fair shares and halves
Share things fairly, and find a half and a quarter.
- Fair shares
- Half of a shape
- Half of a group
- Quarters
- Writing 1/2 and 1/4
5 chapters planned
Fractions and ratio
Every book on this topic, lowest level first. Each one builds on the book above it. If a book feels hard, go back up the ladder to the one before.
NextYou are here Fractions
Cut wholes and groups into equal parts, then name, compare and add the parts.
- Fair shares: equal parts
- One part: halves, quarters, thirds, fifths
- More than one part
- Fractions of a group
- The number line, past 1
- Same amount, different names
- Which is bigger
- Adding and taking away parts
8 chapters
NextYou are here Fractions, decimals and percentages
Calculate with fractions, decimals and percentages, and change one into another.
- Equal fractions and simplest form
- Adding and taking away fractions
- Multiplying and dividing fractions
- Tenths, hundredths and thousandths
- Adding and taking away decimals
- Multiplying and dividing decimals
- Fractions and decimals
- Percentages
8 chapters
NextYou are here Ratio and proportion
Compare amounts with ratios, share in a ratio, and scale recipes and maps.
- Ratio: comparing parts
- Ratios and fractions
- Sharing in a ratio
- Finding one first
- Direct proportion
- Rates and speed
- Maps and scale drawings
- Inverse proportion
8 chapters
NextYou are here Percentages, proportion and growth
Use percentages to find changes, and see how amounts grow or shrink over time.
- Percentage increase and decrease
- Finding the original amount
- Simple and compound interest
- Growth and decay
- Harder ratio problems
- Proportion as a formula
- Graphs of proportion
7 chapters