Whole Numbers Times Fractions

Using Materials

Problem: “At the supermarket, there are 4 blocks of chocolate in each box. Mel notices that she has 5 boxes, each of which has 3 blocks of chocolate left in them. Mel  decides to tidy up by repackaging them into whole boxes. How many boxes can Mel  make up?”

Write 5 x 3/4 on the board, then build 5 groups of 3 quarters with fraction material, and  arrange the 15 pieces into wholes.

Discuss why 5 x 3/4 = 3 3/4.

Examples: Word problems for: 3 x 3/4,  3 x 2/3,  4 x 2/3,  5 x 4/5

Using Imaging

Examples: Imagine the materials. Word problems for: 10 x 2/3,  2 x 5/7,  15 x 1/5,15 x 1/4

Using Number Properties

Examples: Word problems for: 10 x 4/7,  100 x 1/5,  20 x 2/9,  11 x 3/4