Math Games

Grade 4 - Number

Standard 4.N.5 - Practice multiplying by a specific number up to 12.

Included Skills:

Describe and apply mental mathematics strategies, such as:
• skip counting from a known fact
• using doubling or halving
• using doubling or halving and adding or subtracting one more group
• using patterns in the 9s facts
to determine basic multiplication facts to 9 × 9 and related division facts.

• Achievement Indicators
• Students who have achieved this outcome(s) should be able to:
- Provide examples for applying mental mathematics strategies:
• | doubling (for 4  3, think 2  3 = 6, so 4  3 = 6 + 6)
• | doubling and adding one more group (for 3  7, think 2  7 = 14, and 14 + 7 = 21
• | using known facts (for example, when multiplying 9  6, think 10  6 = 60, and 60 – 6 = 54)
• | halving (if 4  6 is equal to 24, then 2 × 6 is equal to 12)
• | think division for multiplication facts (for 64 ÷ 8, think 8   = 64)