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 4–5Split a big load into equal trucks — work out the quotient and the remainder, then dispatch.
- Prime FactoryGrades 4–6Snap number tiles onto the belt so they multiply to the gold target. Find factor pairs, break numbers into primes, and build common multiples.
Money & Finance
- Cash RegisterGrades 2–4Drop coins and bills into the tray and watch the total add up live — build exact amounts, make change, and pay with the fewest coins.
- 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 3–5Load your cart to hit the budget exactly, leave a set amount of change, or spend as close as you can without going over — adding up price tags as you go.
- Price DetectiveGrades 3–5Crack the money math: find the price of one item, the total for many, or how many you can afford on a budget.
Fractions
- Compare FractionsGrades 3–5Compare fractions to a benchmark like 1/2 — count how many are less than, greater than, or beyond it.
- 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 4–6Simplify fractions to lowest terms with the greatest common factor — find the GCF, then the reduced numerator or denominator.
- 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 3–5Classify quadrilaterals by their properties — count right angles, pairs of parallel sides, or equal-length sides.
- 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 3–6Dock 3-D solids and survey them — count the flat faces, the edges where faces meet, and the vertices, from cubes to prisms and pyramids.
- 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 a beacon on the coordinate plane, then dial the coordinates where its image lands — translations, reflections and rotations.
- Circle LabGrades 4–6Work the parts of a circle: find the diameter from the radius, the radius from the diameter, or the circumference using π ≈ 3.
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 4–6Substitute a value for x and evaluate the expression — from x + b to a·x + b — then dial the result.
- 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 4–6Collapse an expression to one number by running the operations in the right order — multiply and divide before you add and subtract.
Data & Probability
- Poll PositionGrades 2–4Read real survey bar graphs: raise your scanner line to measure a bar, spot the most and fewest, and find how many more one choice got than another.
- 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 3–5Read the circle like a fraction: shade a share of the pie, count the shaded slices, or pull a number out of a data pie chart.
- 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 4–6Count the outcomes: how many combinations two choices make, the size of a sample space, or the total a chance is measured out of.
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 3–5Work out elapsed time and durations in minutes: how long between two times, the total of two activities, or how much longer one lasts.
- Time TeleporterGrades 4–6Convert between time units — minutes to hours, hours to days, and 24-hour to 12-hour time.
- Schedule StationGrades 4–6Read a day’s schedule in minutes: find the free gap between events, the total length of the day, or when back-to-back tasks finish.
Measurement
- Ruler RangerGrades 2–4Measure length with a ruler: read how long an object is, build an exact-length bar, and handle rulers that don’t start 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 3–5Read the value a marker points to between the ticks — on a ruler, a thermometer, or a dial.
- Area AceGrades 4–6Area of triangles and parallelograms — find the area from base and height, or a missing base from the area.
Patterns & Logic
- Pattern WeaverGrades 1–4Weave a bead bracelet by adding the bead that keeps the pattern going — spot the repeating unit (red-blue, or trickier), then thread the next colour.
- True-False CircuitGrades 2–4Judge which equations are true and tap every true one to complete the circuit — a wire of addition, subtraction and times facts.
- Sort SorterGrades 2–5Two-way sorting: each item belongs in one box only when BOTH labels are true — check attributes like even/odd and size at the same time.
- Sequence RacerGrades 3–6Crack the rule of a number sequence, then drive to the right checkpoint: find the next number, the missing one, or the size of each jump.
- Venn VoyageGrades 3–6Two rings, two rules. Decide whether each number follows the left rule, the right rule, both, or neither, and drop it in the right zone.
- Algorithm ArcadeGrades 3–6Program a robot: build a sequence of moves that walks it to the goal around the walls, then run it.
- 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