Math Drills

Length (cm, mm, m) Review

E-2

Word Problems (2)

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What this worksheet covers

Grade: Grade 2 (Elementary School)
Topic: Length (cm, mm, m)

Everything rests on two relationships: one tenth of 1 cm is 1 mm, and 100 cm is 1 m. Starting from Measuring with a Ruler, children restate lengths between cm and mm and between m and cm, then add and subtract within one unit and across units, including the cases that carry and borrow.

Writing 8 cm 5 mm as 805 mm rather than 85 mm stands out, since the cm part is not multiplied by 10 during the conversion. In subtraction that needs borrowing, 1 cm is never exchanged for 10 mm, so the mm parts are subtracted smaller from larger and the mm in the answer comes out too big.

From a stage that only compared the lengths of objects, this unit moves on to expressing length as a number. The sense of lining up ends to compare, built in Comparing Length, becomes the foundation for measuring with units such as cm and mm, and the units keep growing into Length (km and Tape Measure) in grade 3, where km enters the picture.

Subtraction (Same Units) · cm (Word Problems)1 question
Addition (With Carrying) · cm, mm (Word Problems)1 question
Addition (With Carrying) · m, cm (Word Problems)1 question
Subtraction (Same Units) · m (Word Problems)1 question
Subtraction (With Borrowing) · cm, mm (Word Problems)1 question
Subtraction (With Borrowing) · m, cm (Word Problems)1 question

Questions & answers

Problems and answers on this worksheet

These are the problems in “Length (cm, mm, m)”, shown with their answers.

(1)On sports day, Chloe prepared 10cm of yellow ribbon. If she uses 3cm of it, how many cm will be left? Answer □
Answer: 7cm
(2)In the warehouse, there is string that is 1cm7mm long and 8cm6mm long. Altogether, how long is it in how many cm and how many mm? Answer □ □
Answer: 10cm, 3mm
(3)During arts and crafts, there is a tape that is 3m60cm and another that is 2m80cm. Altogether, how many m and how many cm will it be? Answer □ □
Answer: 6m, 40cm
(4)At home, Henry found 16m of rope. After using 7m, how many m are left? Answer □
Answer: 9m
(5)At the store, Noah bought 7cm3mm of white tape. If he uses 2cm7mm, how many cm and how many mm are left? Answer □ □
Answer: 4cm, 6mm
(6)At the store, there was 6m14cm of tape. If 2m88cm is cut off, how much will be left, in how many m and how many cm? Answer □ □
Answer: 3m, 26cm

What to do next

Comparing Length and UnitsComparing Length and Units Reading

Next unit: Capacity (L, dL, mL)

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