Lesson 4

Exponents and Large Numbers

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

TIMS Task

  1. n = 90
  2. a = 2
  3. b = 800
  4. c = 13
  5. d = 74,016
  6. e = 16
  7. Possible response: First I added 7000 + 50 + 3 = 7053. I subtracted 7853 − 7053 = 800 so n = 800.

Ongoing Assessment

Use DPP Task R to assess students' abilities to determine the unknown in an equation involving multiple addends [E6].

R. Equations

Replace the letter with a number to make each number sentence true.

  1. 398 = 300 + n + 8
  2. 398 = 400 − a
  3. 7853 = 7000 + b + 50 + 3
  4. 7853 = 7000 + 800 + 40 + c
  5. 70,000 + 4000 + 10 + 6 = d
  6. 70,000 + 4000 + 10 + 6 = 74,000 + e
  7. Show or tell how you solved Question C.