Math Games

Grade 5 - Number

Standard 5.N.5 - Solve multiplication equations with numbers up to 100.

Included Skills:

Demonstrate, with and without concrete materials, an understanding of multiplication (2-digit by 2-digit) to solve problems.
• Illustrate partial products in expanded notation for both factors; e.g., for 36 × 42, determine the partial products for (30 + 6) × (40 + 2).
• Represent both 2-digit factors in expanded notation to illustrate the distributive property; e.g., to determine the partial products of 36 × 42, (30 + 6) × (40 + 2) = 30 × 40 + 30 × 2 + 6 × 40 + 6 × 2 = 1200 + 60 + 240 + 12 = 1512.
• Model the steps for multiplying 2-digit factors, using an array and base ten blocks, and record the process symbolically.
• Describe a solution procedure for determining the product of two given 2-digit factors, using a pictorial representation such as an area model.
• Solve a given multiplication problem in context, using personal strategies, and record the process.
• Refine personal strategies to increase their efficiency.
• Create and solve a multiplication problem, and record the process.
• Solve a given problem using the standard/traditional multiplication algorithm.