Lesson 4

Add Mixed Numbers

Est. Class Sessions: 1

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

    1. 22/8 = 21/4
    2. 16/12 = 11/2
    3. 13/15 = 21/5
    1. 8/18 = 4/9
    2. 5/10 = 1/2
    3. 14/30 = 7/15
  3. Strategies will vary. Possible response: I looked on the Fractions on Number Lines Chart. 4/5 is close to 1. 3/10 is a little less than 1/2. 4/5 − 3/10 will be close to 1/2.

Ongoing Assessment

Use DPP item M to assess students' abilities to represent and identify the simplest form [E2]; solve addition and subtraction problems involving fractions [E8]; and estimate sums and differences [E9].

M. Fractions

  1. Rewrite each of the following fractions as mixed numbers. Write all fractions in simplest form.
    1. 18/8
    2. 18/12
    3. 18/15
  2. Solve the following. Write your answers in simplest form. Estimate to be sure your answers are reasonable.
    1. 15/8 + 1/6 =
    2. 4/5 − 3/10 =
    3. 1/2 − 1/30 =
  3. Explain your estimation strategy for Question 2B.