Final answer:
Using 2s facts, doubling the result of 2 × 8 (which is 16), leads to the correct answer for 4 × 8, which is 32.
Step-by-step explanation:
Using 2s facts to find 4 × 8 is essentially a strategy of doubling and understanding multiplication as repeated addition. You know that 2 × 8 is 16 because that is a basic multiplication fact. Since 4 is twice as much as 2, you can double the result of 2 × 8 to find 4 × 8. So if 2 × 8 equals 16, then 4 × 8 would be 16 doubled, which is 16 + 16, and that sums to 32. Therefore, using 2s facts, you can easily find that 4 times 8 equals 32, which is the correct answer for this multiplication problem.
To use 2s facts to find 4 x 8, you can use the property of multiplication that states that when you multiply a number by 2, the result is double the original number. In this case, since 4 is double of 2, you can think of it as 2 + 2. So, you can rewrite 4 x 8 as (2 + 2) x 8, which is equivalent to 2 x 8 + 2 x 8. This simplifies to 16 + 16, which equals 32. Therefore, 4 x 8 = 32.