Lesson 9 Solve Number Riddles

- Let’s solve number riddles.

Warm-up True or False: Comparison Statements

Decide if each statement is true or false.

Be prepared to explain your reasoning.

$65 > 35$
$65 = 75 - 10$
$65 > 35 + 30$

Activity 1 A Number Riddle

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 More Number Riddles

Sign. Can you guess the mystery number?

Secret Numbers

A:

B:

C:

D:

E:

F:

G:

H:

I:

J: