ChartGlade

Multiplication Chart 1-20

The full 20 × 20 grid: 400 facts on one landscape page, squares diagonal marked. It is the chart for middle-schoolers, math-team kids and anyone who has outgrown 1-12 — printed small enough to fit, large enough to read.

One letter page, landscape. Copy-shop 11×17 for wall use.

Multiplication Table 1-20

×1234567891011121314151617181920
11234567891011121314151617181920
2246810121416182022242628303234363840
33691215182124273033363942454851545760
448121620242832364044485256606468727680
55101520253035404550556065707580859095100
66121824303642485460667278849096102108114120
7714212835424956637077849198105112119126133140
881624324048566472808896104112120128136144152160
9918273645546372819099108117126135144153162171180
10102030405060708090100110120130140150160170180190200
11112233445566778899110121132143154165176187198209220
121224364860728496108120132144156168180192204216228240
1313263952657891104117130143156169182195208221234247260
1414284256708498112126140154168182196210224238252266280
15153045607590105120135150165180195210225240255270285300
16163248648096112128144160176192208224240256272288304320
171734516885102119136153170187204221238255272289306323340
181836547290108126144162180198216234252270288306324342360
191938577695114133152171190209228247266285304323342361380
2020406080100120140160180200220240260280300320340360380400

Click any cell to hear the fact read back.

What a 20-by-20 grid is for

A 1-20 chart is not a bigger memorization assignment — no curriculum asks for the 17 times table. It is a dense reference for kids deep into derived facts and multi-digit work: 16 × 12 area problems, 18 × 4 pattern-hunting, the "is it divisible" scans that make prime-factor conversations possible. The density itself is interesting; plenty of students first see the structure of multiplication (the mirror symmetry, the perfect-square diagonal, how each row grows by its header) on a big grid like this.

Printing is the engineering problem: 21 columns to a row including headers. This sheet prints landscape on one letter page with cell sizes tuned to stay readable at arm's length — smaller than the 1-12 chart by design. If it will live on a wall, print it once at a copy shop at 11×17 and the cells land back at full size.

Teaching tips

Pattern hunts beat row drills here

Nobody drills the 17s. Ask instead: which columns are all even? Where do multiples of 5 line up? What happens along the diagonal? A big grid rewards questions the small one is too cramped to ask.

Great for math teams and challenge work

Math Olympiad-style problems assume comfort with products past 12. A 1-20 chart on the table removes the arithmetic ceiling so the actual problem-solving gets the attention.

Print 11×17 for the wall

Letter-size 1-20 is a desk reference; at 11×17 the cells match the 1-12 letter chart and it works as a wall poster. The layout is identical — no redesign needed.

Use it to introduce square numbers properly

The shaded diagonal on a 20-grid runs 1, 4, 9, 16 … 225, 256 … 400 — far enough for students to see that perfect squares keep going and get sparser as they grow.

Frequently asked questions

What is a 1-20 multiplication chart used for?

Dense reference for upper elementary and middle school: products past 12 that appear in area problems, pattern explorations and math-team work. It is not a memorization target — fluency standards end at 10 × 10 or 12 × 12.

Does 1-20 fit on one page?

Yes — landscape letter, with cell sizes tuned to stay readable at desk distance. For a wall version, the same file prints clean at 11×17 at any copy shop.

How many facts are on a 20 × 20 chart?

400 cells — though the mirror symmetry means only 210 unique products (the 20 perfect squares plus both triangles of the mirror). Spotting that symmetry is a good pattern hunt all by itself.

Which grades use this chart?

Roughly grades 5-8: after 1-12 fluency, when multi-digit multiplication and pre-algebra start pulling products past 144. Younger students are better served by the 1-12 chart.

Related printables