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Recall multiplication facts for 5

This understanding includes immediate recall of the products for 5×05 \times 0 through 5×105 \times 10, from 0 to 50, and recognition that the corresponding facts 0×50 \times 5 through 10×510 \times 5 have the same products by commutativity. The facts reflect equal groups and the predictable sequence of multiples of 5, alternating numbers ending in 0 and 5; larger factors, multi-digit products, and generalized divisibility rules are outside this scope.

Detailed Explanation: Recall multiplication facts for 5

To multiply by 55, count by fives:

5, 10, 15, 20, 25, 30, 35, 40, 45, 505,\ 10,\ 15,\ 20,\ 25,\ 30,\ 35,\ 40,\ 45,\ 50

These are the products for (5×1)(5 \times 1) through (5×10)(5 \times 10). The answers alternate between ending in 55 and ending in 00.

Example: Find (5×7)(5 \times 7).

  1. Start at 55.
  2. Count by 55 seven times:
5, 10, 15, 20, 25, 30, 35 5,\ 10,\ 15,\ 20,\ 25,\ 30,\ 35
  1. The seventh number is (35)(35).

So,

5×7=355 \times 7 = 35

The order can switch without changing the product:

7×5=5×7=357 \times 5 = 5 \times 7 = 35

Practice recalling the multiples of 55 so you can answer these facts quickly.

Learn by doing: Recall multiplication facts for 5

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