Lesson 9

Describing and Analyzing Shapes

Est. Class Sessions: 1–2

Daily Practice and Problems

Teacher Notes
X

TIMS Challenge

  1. 25 − 3 = 22
  2. 10 × (2 + 8) = 100
  3. (10 − 4) ÷ 2 = 3
  4. 15 − 12 = 3
  5. Answers will vary.

Z. Who Am I?

Each question is a new riddle. Write a number sentence to match your answer.

  1. I am three less than five squared.
  2. I am ten times the sum of two and eight.
  3. I am half the difference of ten and four.
  4. If you subtract the product of four and three from the sum of eleven and four, you will know who I am.
  5. Make up your own riddle to share.