Math Games

Grade 5 - Number

Standard 5.N.4 - Solve multiplication word problems with operands up to 100.

Included Skills:

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

• Achievement Indicators
• Students who have achieved this outcome(s) should be able to:
- Determine the products when one factor is a multiple of 10, 100 or 1000 by annexing zero or tacking on zeros, e.g., for 3 × 200 think 3 × 2 hundreds which equals six hundreds (600).
- Apply halving and doubling when determining a given product, e.g., 32 × 5 is the same as 16 × 10.
- Apply the distributive property to determine a given product involving multiplying factors that are close to multiples of 10, e.g., 98 × 7 = (100 × 7) – (2 × 7)