· 2 min read · Ages 8–12 · Grade 3–6
Unit conversion worksheets with the chart printed on the page
How many centimeters in 3 meters? My son knew it was "something hundred". The missing piece was a chart he could look at, not more arithmetic.
Fourth grade homework, 7:40 pm: how many centimeters in 3 meters? My son knew the answer was "something hundred" and had no idea which way to go. The missing piece was not the math. It was a chart he could look at, printed right there, instead of asking me every time.
What the sheet looks like
The unit conversion generator prints metric (mm, cm, m, km, g, kg, mL, L), US customary (inches to miles, ounces and pounds, cups to gallons) or time, for length, mass and weight, capacity or a mix. Difficulty runs from one-step whole numbers through larger numbers and two-step mixed units (2 km 350 m = ___ m) to metric decimals. Format is fill in the blank, conversion tables, or compare with < > =, at 10, 15 or 20 problems a page, or three tables of four to six rows.
The conversion chart option prints only the facts the page actually uses, so a length page shows 1 m = 100 cm and not a wall of every unit ever. Every answer is exact and the key is on a second page.
Why it works
- With the chart on the page, the child practices the reasoning (bigger unit to smaller means multiply) instead of recalling a number they have not learned yet.
- The compare format (3 ft ___ 40 in) cannot be done by pattern matching. You have to convert one side first, which is the whole skill.
- Two-step problems like 1 yd 2 ft = ___ in are where kids actually get stuck in word problems, and most worksheets never include them.
Who it suits
Grades 3 to 6. Third graders should stay on one-step metric with the chart on. Metric decimals are a fifth or sixth grade page, and time units suit any grade that has done multiplication. Turn the chart off only when a child asks for it to be gone. A child who has never measured anything needs the measuring with a ruler sheets first; converting units you have never held is just arithmetic.
US customary is harder than metric for every child, because the numbers are 12, 3 and 16 instead of 10. Do metric first even if customary is what the test uses.