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Cogito

Grade 5 Math · Chapter 3 · Lesson 1

Practice Worksheet

Lining Up the Places

Tenths go with tenths.

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

NameDate

Figure — use these to answer the problems

Two amounts on the same grid. Both count hundredths.

40/100 = 0.40 = 0.4

25/100 = 0.25

0.00.10.20.30.40.50.60.70.80.91.0
First amount in hundredths40
Second amount in hundredths25
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Brackets and Order”

    (9 + 3) × 4 = ?

    Answer

  2. From “A Fraction Is a Division”

    5 ÷ 8 as a fraction. What is the top number?

    Answer

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. 0.6 + 0.27, in hundredths?

    Answer

  2. Why must the places line up?

    • Only matching units can be added.
    • It looks neater.

  3. 0.4 + 0.25, in hundredths?

    Answer

  4. 0.7 + 0.08, in hundredths?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. 0.35 + 0.65, in hundredths?

    Answer

  2. Does writing 3.4 as 3.40 change its value?

    • No.
    • Yes.

Stretch Yourself

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

2 problems

  1. The Shopping

    2.50 pounds plus 1.35 pounds. How many hundredths in all?

    Answerhundredths

  2. The Ribbon

    1.6 metres plus 0.45 metres. How many hundredths in all?

    Answerhundredths