Multiplication Facts (Memory Group)
The multiplication facts memory group contains the 10 hardest multiplication facts from 0x0 through 9x9 that lack easy tricks, covered in Grade 4 Saxon Math Intermediate 4 (Chapter 4). The memory group is: 3x4=12, 3x6=18, 3x7=21, 3x8=24, 4x6=24, 4x7=28, 4x8=32, 6x7=42, 6x8=48, 7x8=56. A useful strategy for 6x8=48: start from 5x8=40 and add one more group of 8.
Key Concepts
New Concept There are only ten multiplication facts from $0 \times 0$ through $9 \times 9$ that we have not practiced. We call these facts the memory group .
What’s next Next, you’ll use brainstorming and timed practice to master these facts, along with the multiplication tables for 10s, 11s, and 12s.
Common Questions
What is the multiplication facts memory group?
The 10 multiplication facts from 0x0 to 9x9 that have no easy shortcut and must be memorized: 3x4, 3x6, 3x7, 3x8, 4x6, 4x7, 4x8, 6x7, 6x8, 7x8.
What is 6 x 8?
48. This is in the memory group. A strategy: 5 x 8 = 40 (easy), then add one more 8: 40 + 8 = 48. Don't confuse with 7 x 8 = 56.
What is 7 x 8?
56. Memory group fact. Strategy: 5 x 8 = 40, add two more 8s: 40 + 16 = 56.
A farmer plants 8 rows of carrots with 6 per row. How many carrots?
8 x 6 = 48. This is a memory group fact. The farmer planted 48 carrots.
How can you use a known fact to learn a memory group fact?
Build from facts you know. For 6x8=48: know 5x8=40, add 8 to get 48. For 4x7=28: know 4x5=20, add 4+4=8 to get 28. Using nearby easy facts as stepping stones helps lock in the harder ones.