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Cogito

Grade 2 Math · Chapter 4 · Lesson 3

Practice Worksheet

Adding Past 100

Ten tens make a hundred, in the middle of a sum too.

10 problems · about 13 minutes · 2.NBT.B.5, 2.NBT.B.7

NameDate

Figure — use these to answer the problems

Watch the tens fill up and become a flat.
First number
and Second number
Altogether

Hundreds

1

Tens

1

Ones

6

64 + 52 = 116

First number64
Second number52
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Making a New Ten”

    29 + 34 = ?

    Answer

  2. From “Adding With Place Value”

    23 + 41 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. 58 + 67 = ?

    Answer

  2. How many tens bundle into one hundred?

    Answer

  3. 70 + 50 = ?

    Answer

  4. 63 + 54 = ?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. 86 + 25 = ?

    Answer

  2. 92 + 45 = ?

    Answer

Stretch Yourself

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

2 problems

  1. The Sponsored Walk

    Leo raised 75 pounds and Ana raised 60. How much did they raise together?

    Answerpounds

  2. Two Boxes

    A box holds 84 marbles and another holds 47. How many marbles in all?

    Answermarbles