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Math Drills

Adding Length (Same Units)

B-3

Word Problems

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What this worksheet covers

Worksheet
Addition (Same Units)

Two lengths carrying the same unit are added, cm with cm and m with m, and the answer takes that same unit. Bare equations trace the procedure first, and the word problems then read scenes in which lengths are joined end to end or put together.

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The first thing to check is whether the unit on the answer is the unit of the problem. An equation in m answered in cm is caught by that alone. Among the word problems, a request for a combined length gets answered with a difference, leaving a result shorter than the longer of the two originals.

Three lessons on units are behind, and arithmetic with lengths begins. Because the units on both sides agree, addition as already learned passes straight through. Addition (Different Units) is where that assumption gives way.

  • cm (Word Problems)3 questions
  • m (Word Problems)3 questions
Questions & answers

Problems and answers on this worksheet

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

  1. (1)The height of the notebook is 25cm, and the width is 18cm. Altogether, how many cm is it? Answer □

    Answer: 43cm

  2. (2)The length of the umbrella is 22cm. The length of the pole is 14cm. Altogether, how many cm is it? Answer □

    Answer: 36cm

  3. (3)The height of the book is 21cm, and the width is 15cm. Altogether, how many cm is it? Answer □

    Answer: 36cm

  4. (4)On the desk, there is a 7m ribbon and a 8m ribbon. How many m are there in all? Answer □

    Answer: 15m

  5. (5)In the crafts room, there is a 10m wire and a 7m wire. How many m are there in all? Answer □

    Answer: 17m

  6. (6)At the shop, there is a 14m tape and a 3m tape. How many m are there in all? Answer □

    Answer: 17m

What to do next

Comparing Length and UnitsComparing Length and Units Reading
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Next unit: Capacity (L, dL, mL)
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