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Cogito

Grade 5 Math · Chapter 1 · Lesson 5

Practice Worksheet

Rounding Decimals

Which mark is it closer to?

10 problems · about 15 minutes · 5.NBT.A.4

NameDate

Figure — use these to answer the problems

The midpoint mark shows which neighbour is nearer.
0102030405060708090100halfway

37

The number37
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Comparing Decimals to Thousandths”

    Which is bigger, 0.608 or 0.61?

    • 0.61.
    • 0.608.

  2. From “Thousandths”

    In 0.914, what digit is in the thousandths place?

    Answer

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. Round 7.63 to the nearest whole number.

    Answer

  2. What question does rounding really ask?

    • Which mark is it nearer to?
    • What is the last digit?

  3. Round 4.62 to the nearest whole number.

    Answer

  4. Round 4.28 to the nearest whole number.

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. Round 9.5 to the nearest whole number.

    Answer

  2. Round 12.49 to the nearest whole number.

    Answer

Stretch Yourself

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

2 problems

  1. The Measurement

    Round 2.83 to the nearest tenth. What is the tenths digit?

    Answer

  2. The Price

    Round 6.5 to the nearest whole number.

    Answer