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Cogito

Grade 5 Math · Chapter 3 · Lesson 2

Practice Worksheet

Subtracting Decimals

Unbundle across the point.

10 problems · about 15 minutes · 5.NBT.B.7

NameDate

Figure — use these to answer the problems

Take one amount away from the other and see what is left.

100/100 = 1.00 = 1.0

35/100 = 0.35

0.00.10.20.30.40.50.60.70.80.91.0
Starting amount in hundredths100
Amount taken away35
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Lining Up the Places”

    0.6 + 0.27, in hundredths?

    Answer

  2. From “Brackets and Order”

    (9 + 3) × 4 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. 1 − 0.28, in hundredths?

    Answer

  2. How do you check a subtraction?

    • Add the answer back on.
    • Do the same subtraction again.

  3. 1 − 0.35, in hundredths?

    Answer

  4. 0.9 − 0.42, in hundredths?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. 2 − 0.75, in hundredths?

    Answer

  2. How many hundredths can one tenth be traded for?

    Answer

Stretch Yourself

Mixed problems. Work out what kind of question it is before you start.

2 problems

  1. The Change

    5 pounds minus 2.35 pounds. How many hundredths are left?

    Answerhundredths

  2. The Race

    10.5 seconds minus 9.86 seconds. How many hundredths is the gap?

    Answerhundredths