Find 3/4 × 1/4. Explain the overlapping partitions of one rectangle.
Practice B — Chapter 5
Fresh problems from the immediately preceding lesson cluster. Show all work and attach correct units.
Consolidation questions
Find 2/3 × 1/5. Explain the overlapping partitions of one rectangle.
Find 1/2 × 4/5. Explain the overlapping partitions of one rectangle.
Find 3/4 × 5/6. Explain the overlapping partitions of one rectangle.
Find 3/4 × 3/5. Explain the overlapping partitions of one rectangle.
Find 1/2 × 2/5. Explain the overlapping partitions of one rectangle.
Calculate 1 3/5 × 1 1/5. Estimate before multiplying.
Calculate 3 4/5 × 2 4/5. Estimate before multiplying.
A workshop starts with 96 tiles. It uses 1/4 of its original tiles on a wall. It then uses 1/3 of the remaining tiles on a table. How many tiles go on the table?
A workshop starts with 48 tiles. It uses 1/4 of its original tiles on a wall. It then uses 1/3 of the remaining tiles on a table. How many tiles go on the table?
Find the reciprocal of 3/4 and prove the product equals 1.
Find the reciprocal of 11/5 and prove the product equals 1.
Representation and explanation
Use Consolidation Questions 1 and 2 above (not two questions of your choice). For Question 1 draw an overlapping two-direction partition of one rectangle. For Question 2 draw an overlapping two-direction partition of one rectangle. Label all quantities, include physical measurement units when they are part of the question, show which operation your model proves, and check the answers by an inverse calculation or a size estimate.