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50 free Elementary School Math trivia questions with answers — trivia quiz, new questions added Aug 2026.
Elementary school math is the math everyone was taught and most adults half remember: which shape has how many sides, what the bottom number of a fraction is called, how many feet make a mile, and why the answer to a times-table question once embarrassed a British finance minister on live television. These 50 questions follow what children learn between grade 1 and grade 5 (years 2 to 6 in the UK): shapes and angles, place value, fractions, times tables and division, measuring length, weight and temperature, telling the time, counting coins, simple word problems, and the names of the symbols and words that mathematics runs on. A few famous numbers and where they came from are mixed in, so the round is never just sums. Every answer carries a one-line explanation with the working shown or the fact behind it. Play it with an eight-year-old to see who wins, use it as a quiz-bowl practice round for an elementary or primary class, or print it for a family quiz night.
30 of 50 questions with answers and explanations. Play the quiz
Q 01Which symbol did Welshman Robert Recorde invent in 1557 to avoid 'the tedious repetition' of a three-word phrase?
Equals sign
The equals sign replaced the words 'is equal to', which Recorde was tired of writing out, and he chose two lines 'because no two things can be more equal'.
Q 02Which number, a 1 followed by a hundred zeros, got its name in 1920 from a nine-year-old boy?
Googol
Googol was the word Milton Sirotta offered his uncle, mathematician Edward Kasner, and an intentional misspelling of it later became the name of the search engine Google.
Q 03What is 7 times 8, the question UK Chancellor George Osborne refused to answer from a schoolboy on Sky News?
56
7 × 8 = 56, and Osborne, who said he had studied maths at A-level, replied that he had 'made it a rule in life not to answer' maths questions.
Q 04How many squares does a standard chessboard have, laid out as eight rows of eight with the colours alternating?
64
A chessboard has 64 squares, and a games book of 1283 argued that eight by eight was the ideal size because a 10×10 board made chess too tiresome and 6×6 too quick.
Q 05How many sides does a red stop sign have, a shape chosen so drivers can recognise it from the back?
8
A stop sign has 8 sides, and the octagon was standardised in 1922 partly because its outline could be recognised at night before signs were reflective.
Q 06How many loaves make a baker's dozen, the extra one added so bakers were not punished for short weight?
13
A baker's dozen is 13, because a baker caught selling underweight bread could be fined, flogged or have the oven destroyed, so a spare loaf was cheap insurance.
Q 07What do the three inside angles of any triangle on flat paper add up to, the same as a straight line?
180°
Triangle angles total 180° only on a flat surface; on a curved surface such as the Earth's, the three angles add up to more, as much as 540°.
Q 08Which date is Pi Day, chosen because of the way the United States writes the month before the day?
March 14
March 14 is 3/14 in US month-day order, pi's first three digits; Albert Einstein was born that day, and July 22 (22/7) is Pi Approximation Day.
Q 09Which shape do honeybees build every cell of a honeycomb in, because it fills a surface using the least wax?
Hexagon
Hexagon cells tile a flat surface with less wax than any other equal-cell shape, and the finished comb gains strength under compression.
Q 10Which name, from a Latin word meaning 'namer', does the bottom number of a fraction go by?
Denominator
The denominator 'names' the kind of part, such as halves, thirds or quarters, while the top number, the numerator, from the Latin for 'counter', counts how many of them there are.
Q 11Which number does the Roman numeral L stand for, the letter that sits between X and C in value?
50
L is 50, though on tombstones the Romans occasionally carved 50 as XXXXX, and the largest number the standard seven letters can write is 3,999, MMMCMXCIX.
Q 12How many items are in a gross, the old trade count that means a dozen dozens?
144
A gross is 144, from 12 × 12, and the word comes from the Old French grosse douzaine, a 'large dozen'; a great gross, a dozen gross, is 1,728.
Q 13How many years is 'four score and seven', the span Abraham Lincoln counted back to 1776 at Gettysburg?
87
Four score and seven is 87, a score being 20, and Lincoln spoke in November 1863, 87 years after the Declaration of Independence, perhaps echoing the 'threescore years and ten' of Psalm 90.
Q 21Which graph, first published by William Playfair in 1801, shows how a whole splits into parts as slices of a circle?
Pie chart
The pie chart owes much of its popularity to Florence Nightingale, who adapted it into her 'rose diagram' of 1858 to show Queen Victoria what was killing soldiers in army hospitals.
Q 22Which Chinese puzzle cuts a square into five triangles, a square and a parallelogram to rearrange into pictures?
Tangram
Tangram pieces are called tans, and the craze reached Europe and America on trading ships soon after 1800, with sets made from wood, glass and tortoiseshell.
Q 23Which word, one that also means 'blunt', describes an angle between a right angle and a straight line in size?
Obtuse
Q 14Which US coin is the smallest and thinnest in circulation, despite being worth more than a penny or a nickel?
Dime
The dime is 17.91 mm across and 1.35 mm thick, smaller than a penny worth a tenth as much, and its name comes from the Old French disme, a 'tenth part'.
Q 15Which name, from the Greek for a sharpened stick, does the ÷ division sign go by?
Obelus
The obelus was first printed as a division sign by Swiss mathematician Johann Rahn in 1659; ancient scholars had used the same mark to flag suspect passages in manuscripts.
Q 16When 47 balloons are shared equally among 6 children, how many balloons are left over?
5
6 × 7 = 42 and 47 − 42 = 5, so 5 balloons are left over; the 'left over' amount is what mathematicians call the remainder, whether dividing numbers or polynomials.
Q 17Which clear plastic half-circle, marked in degrees along its curved edge, do pupils use to measure angles?
Protractor
A protractor is a clear half-disc marked from 0° to 180°, usually with two scales running in opposite directions so an angle can be read from either side; bevel protractors add a pivoting arm for toolmakers.
Q 18How many full weeks are in a year, leaving one spare day, or two in a leap year?
52
A year is 52 weeks plus one day, which is why any date's day of the week moves forward by one each year, or by two once a leap day has passed.
Q 19At how many degrees Fahrenheit does water freeze, on the scale the United States still uses for its weather forecasts?
32 °F
Water freezes at 32 °F and boils at 212 °F; Fahrenheit based the bottom of his scale on the coldest brine mixture he could make and put body heat at 96 degrees.
Q 20Which drawing of overlapping circles, invented by an English logician in 1880, shows what two groups have in common?
Venn diagram
Venn diagram circles are named for John Venn, whose Cambridge college, Gonville and Caius, honours him with a stained-glass window showing one.
Obtuse angles sit between a right angle and a straight angle; a smaller angle is acute, and one wider than a straight line but short of a full turn is reflex.
Q 24Which triangle, named from Greek words for 'equal' and 'leg', has exactly two sides of the same length?
Isosceles
Isosceles triangles also have two equal angles, a result so early in Euclid that it was nicknamed the pons asinorum, the 'bridge of asses', for sorting students who could follow geometry from those who could not.
Q 25Which solid shape, every surface point the same distance from its centre, lets balls roll smoothly in any direction?
Sphere
A sphere has the smallest surface of any shape enclosing a given volume, which is why bubbles and planets take the form; the name comes from the Greek sphaira, 'ball'.
Q 26Which family name, from the Latin for 'four sides', covers squares, rectangles, kites and trapeziums alike?
Quadrilateral
Quadrilateral comes from quadri and latus, and the Greek-built alternative, tetragon, never caught on the way the Greek names for other many-sided shapes did.
Q 27Which word describes the total every time two odd numbers are added, as in 3 + 5 or 7 + 9?
Even
Even is the only possibility, because each odd number is an even one plus 1 and the two spare 1s pair up; odd times odd, by contrast, stays odd.
Q 28Which bead-and-rod counting frame is still taught in Japanese primary schools as a way to speed up mental arithmetic?
Abacus
The abacus in Japan is the soroban, and counting frames go back to Sumer around 2700 BC, lasting until handheld calculators largely replaced them in the 1980s.
Q 29Which kind of number word, such as 'third' or 'tenth', tells you position in a line rather than how many?
Ordinal
Ordinal numerals rank things, whereas cardinal numerals such as 'three' count them; English builds most ordinals by changing only the last word, so 523 becomes 'five hundred twenty-third'.
Q 30How many degrees are in a right angle, the corner carpenters check with the 3-4-5 rule?
90°
A right angle is 90°, a quarter turn, and a triangle with sides of 3, 4 and 5 units always contains one, a check builders and masons have relied on since antiquity.