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Cogito

Grade 1 Math · Chapter 10 · Lesson 9

Practice Worksheet

Tricky Comparison Problems

Some problems try to lead you the wrong way.

10 problems · about 14 minutes · 1.OA.A.1

NameDate

Figure — use these to answer the problems

Ana’s bar is known. Leo’s is not. Work out how long it is.
Ana
Leo
Ana12
Leo7
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

3 problems

  1. From “When You Need a New Ten”

    29 + 34 = ?

    Answer

  2. From “Adding to 100 With Place Value”

    34 + 25 = ?

    Answer

  3. From “Ten More, Ten Less to 100”

    Ten more than 66 is?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. Ana has 3 more than Leo. Ana has 10. Leo has?

    Answer

  2. Does the word "more" always mean add?

    • No. Draw it and see.
    • Yes. Always.

  3. 6 more than Leo. Ana has 14. Leo has?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. 5 fewer than Ana. Leo has 9. Ana has?

    Answer

Stretch Yourself

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

3 problems

  1. 2 more than Leo. Ana has 13. Leo has?

    Answer

  2. Marbles

    Ana has 4 more than Leo. Ana has 15. How many does Leo have?

    Answermarbles

  3. Books

    Leo has 3 fewer than Ana. Leo has 8. How many does Ana have?

    Answerbooks