Lesson 7 Center Day 1

- Let’s use place value to identify numbers and practice adding and subtracting.

Warm-up True or False: Compare to 100

Decide if each statement is true or false. Be prepared to explain your reasoning.

$100 > 99$
$100 < 99 + 1$
$98 + 3 > 100$
$50 + 50 + 50 > 100$

Activity 1 Introduce Mystery Number: Three-digit Numbers

We are going to learn a new center called Mystery Number that you might have played in first grade. You will pick 3 cards and make a mystery three-digit number. Then you will give your partner clues and they will try to guess your mystery number.

Activity 2 Centers: Choice Time

Choose a center.

Jump the Line

Mystery Number

Number Puzzles