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Cogito

Grade 2 Math · Chapter 3 · Lesson 1

Practice Worksheet

A New Unit: The Hundred

Ten tens bundle into one hundred.

10 problems · about 11 minutes · 2.NBT.A.1

NameDate

Figure — use these to answer the problems

Set a number and count the flats, the rods, and the cubes.

Hundreds

3

Tens

4

Ones

2

The number342
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

3 problems

  1. From “Adding and Subtracting on a Number Line”

    Start at 26 and jump forward 20. Where do you land?

    Answer

  2. From “From Ruler to Number Line”

    How far is 13 from 0 on a number line?

    Answer

  3. From “Length Word Problems”

    A 23 cm and a 19 cm strip joined. How long in all?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. How many tens are in one hundred?

    Answer

  2. In 342, how many hundreds are there?

    Answer

  3. How many tens make one hundred?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. How many ones make one hundred?

    Answer

Stretch Yourself

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

3 problems

  1. 4 hundreds is which number?

    Answer

  2. Boxes of Ten

    A crate holds ten boxes. Each box holds ten pencils. How many pencils in a crate?

    Answerpencils

  3. Three Crates

    Leo has 3 crates of a hundred pencils each. How many pencils does he have?

    Answerpencils