Grade 4 Measurement Missing Number

Grade 4 measurement missing number sheet: 24 problems on converting within a measurement system, missing side lengths.

CCSSAligned to Common Core 4.MD.1: Know relative sizes of measurement units within one system; express measurements in a larger unit in terms of a smaller unit.

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Three different problem sets — same skill, same layout, fresh numbers.

Preview — Set A

Find the number that belongs in each blank.

1.
___ m = 400 cm
2.
A rectangle has area 56 sq cm and width 8 cm. Length = ___ cm
3.
2 L = ___ mL
4.
A rectangle has area 112 sq ft and width 8 ft. Length = ___ ft
5.
5 qt = ___ pt
6.
A rectangle has perimeter 20 m and length 4 m. Width = ___ m
7.
5 L = ___ mL
8.
A rectangle has perimeter 30 m and length 11 m. Width = ___ m
9.
___ gal = 28 qt
10.
A rectangle has perimeter 46 ft and length 15 ft. Width = ___ ft
11.
11 kg = ___ g
12.
A rectangle has area 42 sq cm and width 6 cm. Length = ___ cm
13.
___ pt = 22 cups
14.
A rectangle has area 143 sq in and width 11 in. Length = ___ in
15.
___ cm = 90 mm
16.
A rectangle has perimeter 34 in and length 6 in. Width = ___ in
17.
___ lb = 32 oz
18.
A rectangle has perimeter 50 m and length 13 m. Width = ___ m
19.
7 yd = ___ ft
20.
A rectangle has perimeter 16 in and length 5 in. Width = ___ in
21.
10 pt = ___ cups
22.
A rectangle has area 72 sq m and width 8 m. Length = ___ m
23.
4 kg = ___ g
24.
A rectangle has perimeter 30 ft and length 6 ft. Width = ___ ft

What this worksheet covers

There are 24 measurement problems here — one page to work, one page of answers to check against — and Sets B and C repeat the layout with different numbers. Within that, the blank moves between positions from problem to problem, so no single procedure clears the page and the numbers run as high as 400. Problems 9 and 17, for instance, are "___ gal = 28 qt" and "___ lb = 32 oz". Common Core 4.MD.1 is the slot this page fills.

Skills practiced

Grade 4 measurement means converting within the customary and metric systems, feet and inches together, and area and perimeter. The skills on the page: converting within a measurement system and missing side lengths. To finish it, a student has to reason backwards from a result to a missing part. Eighteen different answers appear across the 24 problems, so a student cannot copy one result down the page.

About the missing number format

Each of the 24 problems has a blank, and the blank is not always at the end: problem 9, "___ gal = 28 qt" puts it where the student has to reason backwards. A missing side, dimension or unit count reverses the formula, which is the only way to check it is understood.

Set A, Set B and Set C

All three sets are produced by the site's deterministic generator from a fixed seed, so they are the same every time the site is built and the answer keys are exact. Where Set A's problem 13 is "___ pt = 22 cups", Set B's is "12 lb = ___ oz".

How to use this worksheet

Work the 24 problems straight through, then check against the key together rather than handing it back marked; asking a grade 4 student to find their own measurement error teaches more than seeing it circled. If more than a third of the 24 problems come back wrong, stop and step back a grade in measurement rather than assigning Set B.

One mistake to watch for

A conversion multiplies when it should divide: 36 inches is answered 432 feet instead of 3 feet. Watch problem 22 of this missing number — "A rectangle has area 72 sq m and width 8 m. Length = ___ m" — for this one.

The direction of the conversion is not being reasoned about.

Ask "should the answer be a bigger number or a smaller one?" before touching the factor; feet are bigger units so there are fewer of them.