Decimal Games for Kids (Grades 3–8)
Play Decimal Columns (Grades 3–5)Decimal games practice reading, comparing and using decimals, and linking them to fractions and percents. They are made for grades 3 to 8 and are free.
Decimals are used in money, measuring and science. Many kids find them hard because the digits look like whole numbers. These games show each decimal as a bar, a grid or a point on a line, so kids see its real size.
11 Decimal Games
Easiest first. Each card shows its grade range.
- Decimal ColumnsGrades 3–5Steer and cycle falling sticks of three decimal jewels so three equal values line up and clear, however they are written — 0.5, 0.50, 5 tenths or 50/100.
- Triple MatchGrades 4–5Fractions, decimals and percents are three costumes for one value. Read whichever form is shown and calibrate the meter to the matching percent.
- Decimal DuelGrades 4–6Two decimals face off — pick <, =, or > and see which one really wins.
- Rounding ReefGrades 4–6A decimal is stuck between two round numbers — find the halfway flag and tap the nearer one.
- Decimal LabGrades 4–6Compose decimals from tenths and hundredths and watch a magnitude bar fill. Build exact decimals, beat a threshold, and land between two values — seeing exactly why 0.5 beats 0.45.
- FDP TriadGrades 5–6One shaded 100-grid, three names — match the fraction, decimal, and percent that mean the same amount.
- Percent LabGrades 5–6Fill a 100-square grid by dragging — the fill level is the percent. Set percents, match fractions and decimals, and find the percent of a number.
- Ratio PopGrades 6–8Aim a bubble labelled 3:4 (or 75%, or 9 of 12) into a hanging cluster and fire it at bubbles worth the same value so they pop — while the reversed and add-one decoys stay stuck.
- Rational RankerGrade 7Slide flags labelled −3/4, 0.6 and −1 1/2 along one number line to their exact spots — placing them IS ordering them, and the tolerance tightens every level.
- Rational RoverGrade 7Drive a rover one signed jump card at a time — negative fractions and decimals, left and right across zero — so the sum is simply where it stops.
- Repeating Fraction ForgeGrade 8Slide a repeating decimal's digits by ×10, ×100 or ×1000 and hit SUBTRACT — when the tails line up they cancel before your eyes and the fraction falls out.
Common Questions
How do I teach decimals to my child?
Start with money. A dime is one tenth of a dollar, and a penny is one hundredth. Next, shade a 10 by 10 grid: one column is 0.1 and one small square is 0.01. Then write the decimals in a place value chart. Last, line up decimal points when you compare or add.
What grade do kids learn decimals?
Tenths and hundredths are grade 4. Thousandths are grade 5. Adding and subtracting decimals is grades 4 to 5. Multiplying and dividing decimals is grades 5 to 6.
What is a common decimal mistake?
Kids often think 0.45 is bigger than 0.5 because 45 is bigger than 5. Add a zero to make 0.50. Now compare 45 hundredths with 50 hundredths. Fifty is more, so 0.5 is bigger. Same-length decimals are easier to compare.
Which decimal game should my child start with?
For grades 3 to 5, try Decimal Columns, a falling-jewel game. For grades 4 to 5, try Triple Match. For grades 4 to 6, try Decimal Duel or Decimal Lab. Older players in grade 8 can try Repeating Fraction Forge.
Are these decimal games free?
Yes, they are all free. There are no ads, no in-app purchases and no sign-up. The games run in the browser on any phone, tablet or computer.
Percent Games · Place Value Games · Rounding Games · Number Line Games · ← All math games by topic · Play now on the games hub