Skill: Recall multiplication facts for 8

Explanation and Free Practice Resources

This knowledge comprises fluent recall of whole-number multiplication facts with 8, including 8×08 \times 0 through 8×108 \times 10, and understanding each product as eight equal groups or an array with eight rows or columns. It includes using commutativity to connect 8×n8 \times n with n×8n \times 8 and recognizing related patterns, but not multiplication with larger factors, multi-digit algorithms, or generalized algebraic rules.

Detailed Explanation: Recall multiplication facts for 8

Multiplication by 88 means making equal groups of 88. You can find the answer by skip-counting by 88:

8, 16, 24, 32, 40, 48, 56, 64, 72, 808,\ 16,\ 24,\ 32,\ 40,\ 48,\ 56,\ 64,\ 72,\ 80

These are the products for (8×1)(8 \times 1) through (8×10)(8 \times 10). Also, (8×0=0)(8 \times 0=0) because zero groups have zero objects.

Example: Find (8×6)(8 \times 6).

  1. Think of 66 groups with 88 in each group.

  2. Count by 88 six times:

8, 16, 24, 32, 40, 48 8,\ 16,\ 24,\ 32,\ 40,\ 48
  1. The sixth number is (48)(48), so

8×6=48. 8 \times 6=48.

You can also turn the factors around:

6×8=8×6=48.6 \times 8=8 \times 6=48.

So, whenever you see 88 multiplied by a number, use your 88 facts or skip-count by 88.

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