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K-5 Grade 1 Unit 8 Lesson 9

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•K-5 Math 6-8 Math 9-12 Math

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Kindergarten •Grade 1 Grade 2 Grade 3 Grade 4 Grade 5

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Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 •Unit 8

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Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 Lesson 8 •Lesson 9 Lesson 10

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9-12

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Unit 8

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Lesson 9

Warm-up Activity 1 Activity 2

Unit 8, Lesson 9

Solve Number Riddles

Grade 1

Warm-up

Decide if each statement is true or false.

Be prepared to explain your reasoning.

Activity 1

My number is less than 60.

My number has 4 ones.

My number is more than 30.

What numbers fit these clues?

Secret number: ___________

Activity 2

Secret Numbers

A: __________

B: __________

C: __________

D: __________

E: __________

F: __________

G: __________

H: __________

I: __________

J: __________

Sign. Can you guess the mystery number?