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Math Drills

Subtracting Length (Same Units)

B-1

Word Problems

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What this worksheet covers

Worksheet
Subtraction (Same Units)

Subtraction of lengths opens here. Both sides carry the same unit, cm against cm and m against m, so nothing but the sizes has to be weighed. Bare equations stand alongside word problems in which a scene of length being taken away has to be read.

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Setting down an equation without first deciding which of the two lengths is greater turns the subtraction round. Checking that the shorter is being taken from the longer settles it. Writing the equation in the order the figures happen to appear in the text also flips the direction.

The direction has turned, but the stance of getting the units to agree before calculating is inherited from Addition (Same Units). In Subtraction (Different Units) the length being subtracted from carries two units.

  • 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)At the handicraft club, Ethan prepared 11cm of wire. If he cuts 2cm of it, how many cm will be left? Answer □

    Answer: 9cm

  2. (2)In handicraft class at school, Noah prepared 18cm of wire. If he cuts 9cm of it, how many cm will be left? Answer □

    Answer: 9cm

  3. (3)At the park, Riley brought 19cm of rope. If she uses 10cm of it, how many cm will be left? Answer □

    Answer: 9cm

  4. (4)At home, Noah found 17m of white tape. After using 10m, how many m are left? Answer □

    Answer: 7m

  5. (5)On sports day, Olivia prepared 10m of red ribbon. After using 4m, how many m are left? Answer □

    Answer: 6m

  6. (6)During crafts time, Hannah prepared 19m of wire. After using 12m, how many m are left? Answer □

    Answer: 7m

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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