Math Games

Grade 5 - Number

Standard 5.N.4 - Solve multiplication word problems with numbers up to 1000.

Included Skills:

Apply mental mathematics strategies for multiplication, such as
• annexing then adding zeros
• halving and doubling
• using the distributive property

• Determine the products when one factor is a multiple of 10, 100, or 1000 by annexing zero or adding zeros (e.g., for 3 × 200 think 3 × 2 and then add two zeros).
• Apply halving and doubling when determining a product (e.g., 32 × 5 is the same as 16 × 10).
• Apply the distributive property to determine a product involving multiplying factors that are close to multiples of 10 [e.g., 98 × 7 = (100 × 7) – (2 × 7)].