Grade 4 Math Games (Ages 9–10)
Fourth grade math scales everything up: multi-digit multiplication, long division with remainders, equivalent fractions and fraction addition, first decimals, angles and symmetry, area formulas, and unit conversion. The common thread is place value — almost every grade 4 stumble traces back to shaky tens-hundreds-thousands thinking.
At this age games earn their keep in two ways. They keep fact fluency warm (a fourth grader who stops practicing facts loses speed just when long division starts to need it), and they make the new multi-step procedures — regrouping, remainders, equivalence — visible and self-checking instead of a mystery ritual.
The lists below are grouped by topic and ordered easiest-first. A typical fourth grader should split time between the arithmetic and fractions lists, with regular visits to geometry and measurement. Every game is free in the browser with no ads and no sign-up.
Arithmetic
- Place Value ForgeGrades 2–4Stack color-coded base-ten blocks into ones, tens and hundreds silos to forge target numbers. Build numbers, read the silos, and regroup ten of one place into one of the next.
- Number Line NavigatorGrades 2–4Pilot a probe along the number line: glide it to an exact value, and round numbers by parking on the nearest ten or hundred — the line shows which landmark is closer.
- Column CrunchGrades 2–4Stack the numbers and crunch them one column at a time — ones, tens, hundreds — carrying and borrowing across the line to build each answer digit.
- Galaxy DividersGrades 3–4Build ROWS × COLUMNS matrices to blast alien fleets out of the sky. Multiplication and division are the weapon.
- Estimation StationGrades 3–5Round to the nearest ten to estimate fast — round a number, or estimate a sum or difference by rounding each part first.
- 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.
- Long Division DepotGrades 4–5Deal crates onto the trucks round by round — what's left in the pile is the remainder. Sharing IS the division!
- Prime FactoryGrades 4–6Dock rush! Numbers roll toward the shipping dock — SPLIT the composites into factor pairs, SHIP the primes whole. Watch out for sneaky 51s and 91s.
Money & Finance
- Cash RegisterGrades 2–4Customers are lining up! Build each one's exact money in the tray and ring it up before their patience runs out — change counts up the real cashier way.
- Piggy PlanGrades 2–4Plan your savings: work out the total after a few weeks, how many weeks to reach a goal, or how much to save each week.
- Budget BossGrades 3–5Checkout rush! Groceries roll toward the gate — BUY what fits your wallet, SKIP what doesn't. Over-spend and the card declines. Land the budget to level up!
- Price DetectiveGrades 3–5One line on the receipt is wrong — find it! Check each price with your magnifying glass and tap the culprit.
Fractions
- Compare FractionsGrades 3–5Two fraction bars — tap the bigger one! See why with the proof ruler that lines every fraction up.
- Fraction FrontierGrades 3–5Chart fractions on a trail number line: plot a fraction, compare which is bigger, and add fractions by hopping — with equal fractions landing on the very same spot.
- Fraction FeastGrades 3–5Cater the party by fractions: serve a fraction of a tray of treats, or count all the slices in a mixed number — then plate exactly that many.
- Fraction PropulsionGrades 4–6Balance twin warp cores running on different denominators — fill both to the same energy line to prove equivalent fractions and jump across the galaxy.
- 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.
- Simplify StationGrades 4–6Fold the fraction down — ÷ chips shrink top and bottom together while the value bar never moves.
- Fraction AddGrades 4–6Give two fractions a matching bottom number, then add or subtract the tops — the common denominator is set for you; dial the numerator of the answer.
Geometry & Shapes
- Shape ShipyardGrades 1–4Inspect every 2-D shape in the yard: trace its straight sides and pointy corners and tap to count them, then know each one by name.
- Mirror LabGrades 3–5Complete the reflection: a glowing pattern sits on one side of the line — paint its mirror twin on the other. Build vertical, horizontal and 180° rotational symmetry, one cell at a time.
- Quad QuestGrades 3–5Shapes glide toward the escape line — name each one by its most specific class before it crosses. Miss and the property marks teach you why.
- Plot ArchitectGrades 3–5Survey neon plots on a grid: drag the corner to size width and height. Hit target areas, fence target perimeters, and learn to tell area from perimeter when both must match.
- Solid StationGrades 3–6Tap every face, edge and vertex on real spinning solids — hidden parts too — then prove Euler: F + V − E = 2.
- Angle ArsenalGrades 4–6Command an orbital protractor cannon: dial the exact angle to vaporize targets. Measure and estimate angles, sort acute/right/obtuse, and compute complements and supplements under fire.
- Transformer GridGrades 4–6Slide, flip, or turn the beacon — then tap the exact cell where its image lands and watch the move play out.
- Circle LabGrades 4–6Measure a circle with its own parts: lay radius sticks to build the diameter, wrap diameter ribbons around the rim, and discover π ≈ 3.14 for yourself.
Coordinates & Algebra
- Inequality IsleGrades 4–6Place the boundary of an inequality on the number line, find the smallest solution, or count how many whole numbers make it true.
- Expression LabGrades 4–6Pour the value of x into the expression, then collapse the tiles one legal step at a time — multiply before you add, parentheses first.
- Function FactoryGrades 4–6Number pods ride a neon conveyor through machines like ×2 and +3, morphing as they go. Tune the gates to fill each order, reverse-engineer inputs, and crack mystery rules.
- Balance ScaleGrades 4–6Tip the beam level to solve the equation — balance the pans, solve for x, and build equal weights on both sides.
- Order OpsGrades 4–6Defuse the falling expression bombs! Tap the operations in PEMDAS order — each correct tap collapses the math in place before the bomb hits the line.
Data & Probability
- Poll PositionGrades 2–4A data-reading kart race! Answer tally and bar-chart questions fast to BOOST past the pace kart — first across the finish line wins the lap.
- Line Plot LabGrades 3–5Read a line plot of stacked ×’s: count the data over one value, total it all up, spot the most common value, or work out the range.
- Pie LabGrades 3–5Pie counter rush! Customers order fractions — tap exactly those slices onto the tray and serve before their patience runs out.
- Quantum SpinnerGrades 4–6Build a probability spinner: set how many sectors win, then spin. Match a target chance as a fraction, shape likelihoods (certain/even/unlikely), and watch experiments converge on the theory in a live bar chart.
- Stat LabGrades 4–6Raise and lower data bars and watch the mean, median and range shift live. Balance the mean onto a target line, centre the median, and set the range — statistics you can see.
- Probability PathGrades 4–6Tap every marble into the tray and watch the probability fraction build itself — then spin 20 times to test it!
Time
- Chrono CadetGrades 2–4Set the station clock to dispatch every shuttle: read an analog clock into digital, flip AM/PM, and do time-math forward and back across noon.
- Duration DashGrades 3–5Dash a runner along a timeline to measure elapsed time: leap whole hours, hop five minutes at a time, and land right on the finish flag.
- Time TeleporterGrades 4–6Convert between time units — minutes to hours, hours to days, and 24-hour to 12-hour time.
- Schedule StationGrades 4–6Work the departures board — tap the train that gets you there on time, measure journeys from the timetable, and catch your connection before the bus pulls away!
Measurement
- Ruler RangerGrades 2–4Objects march across the ruler — read each length before it escapes! Watch for the classic trap: the start isn't always at zero (end − start).
- Balance BayGrades 2–4Weigh the catch on a balance scale: add kilo-weights until the beam sits level to find a mass, or make one pan heavier or lighter.
- Liquid LabGrades 2–4Pour and measure capacity in ml: fill a measuring jug to a target, read the level off the scale, and combine two pours into one total.
- Convert LabGrades 3–6Drag the measuring gauge to convert metric units — mm·cm·m, g·kg, mL·L. The level you fill IS the answer.
- Temp TrekGrades 3–5Read and set a thermometer in °C — including below zero, where the numbers go negative. Track temperatures that rise and drop across the zero line.
- Scale ReaderGrades 3–5Inspection rush! Instruments hit the bench — read the needle between the ticks before the timer sweeps. APPROVED stamps for sharp eyes.
- Area AceGrades 4–6Fill rows of unit squares, fold the triangle from its rectangle, slice-and-slide the parallelogram — build every area.
Patterns & Logic
- Pattern WeaverGrades 1–4Beat the shuttle to the gap! Tap the bead that keeps the pattern going before the shuttle lands — finished strands weave into a growing ribbon.
- True-False CircuitGrades 2–4Equations stream toward the OUT gate — judge each TRUE or FALSE before it slips through. Fast streaks surge the circuit faster!
- Sort SorterGrades 2–5Conveyor rush: boxes roll toward the edge — one tap sorts each into the bin where BOTH labels are true. Fast streaks speed the belt up!
- Sequence RacerGrades 3–6The number sequence is your race track: crack the rule (+4, −3, ×2, growing jumps), tap the next number and your car zooms forward — beat the pace car!
- Venn VoyageGrades 3–6Numbers drift toward two rule rings — tap the zone where each belongs (left, right, overlap or neither) and watch the diagram fill up.
- Algorithm ArcadeGrades 3–6Program the delivery bot and hit RUN — the moment of truth! Battery drains while you think, crashes replay so you can fix the route, shortest path earns a ★.
- Logic GridGrades 3–6Read the clues, rule out what can’t be true with ✗, and pin down each match with ✓ — one solution, pure deduction.
Common Questions
What math should a 4th grader know?
Grade 4 centers on multi-digit multiplication and division (including remainders), factors and multiples, equivalent fractions and adding fractions with like denominators, decimal notation for tenths and hundredths, measuring and classifying angles, area and perimeter formulas, and converting units of measure.
How can I help my child with long division?
Make sure multiplication and subtraction facts are fast first — long division fails on fluency, not on the procedure. Then practice with small friendly numbers where your child can estimate the answer before dividing. The long-division game below scaffolds exactly that: estimate, multiply, subtract, bring down, with the remainder made visible.
Why do kids find equivalent fractions hard?
Because taught as a rule (“multiply top and bottom by the same number”) it is arbitrary. Seen as a picture — the same amount cut into more pieces — it is obvious. The fraction games here always tie the arithmetic to the picture, so equivalence becomes something your child can see and verify.
Are these games enough, or does my 4th grader still need worksheets?
Games handle the practice-and-fluency side excellently and school handles instruction; most families need nothing more. If your child wants extra structure, use the games as the daily warm-up and save written work for showing multi-step reasoning.
Math Games for Other Grades
Kindergarten · Grade 1 · Grade 2 · Grade 3 · Grade 5 · Grade 6