Consolidation questions 1 · two-digit multiplication
Compute 43 × 45 using four area-model partial products.
Singapore Math 5A · Independent learning
Practice A — Chapter 3
Consolidation target: Consolidate double-digit multiplication and related applications.
Fresh problems from the immediately preceding lesson cluster. Show all work and attach correct units.
Consolidation questions
Consolidation questions 2 · two-digit multiplication
Compute 81 × 29 using four area-model partial products.
Consolidation questions 3 · two-digit multiplication
Compute 48 × 40 using aligned partial products.
Consolidation questions 4 · two-digit multiplication
Compute 35 × 44 using aligned partial products.
Representation and explanation
Use Consolidation Questions 1 and 2 above (not two questions of your choice). For Question 1 draw a tens-and-ones area model including every partial product. For Question 2 draw a tens-and-ones area model including every partial product. 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.