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Cogito

Grade 2 Math · Chapter 4 · Lesson 9

Practice Worksheet

Word Problems Within 100

Draw the bars, then choose what to do.

10 problems · about 13 minutes · 2.OA.A.1

NameDate

Figures — use these to answer the problems

Set the two parts. The bar underneath is the whole.
First amount and Second amount
In all
First amount38
Second amount25
Figure 1
A compare problem. The dashed piece is the difference.
Ana
Leo
Ana46
Leo29
Figure 2

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Checking by Adding”

    75 − 38 = ?

    Answer

  2. From “Subtracting With a Broken Ten”

    45 − 28 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. 47 birds. 28 fly away. How many are left?

    Answer

  2. In a compare problem, does anything join or leave?

    • No. Two amounts just sit side by side.
    • Yes. Something is taken away.

  3. 52 and 39 put together. How many?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. 80 take away 46. How many are left?

    Answer

Stretch Yourself

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

4 problems

  1. 63 and 48. How much more is 63?

    Answer

  2. The Playground

    38 children were outside and 25 more came out. How many are outside now?

    Answerchildren

  3. Comparing Collections

    Ana has 46 stickers and Leo has 29. How many more does Ana have?

    Answermore

  4. The Missing Start

    After 26 more books arrived, a shelf held 71. How many were there before?

    Answerbooks