How can you use 4x7 to find 8x7? Find the product

8x7=4x2x7=4x7x2=(4x7)x2 To find 8x7, multiply 4x7 by 2. Hope this helps :)

We know that 4 × 7 = 28 We also know that 8 is 2× 4. That means we can write 8×7 as 2×(4×7). We already know that 4 × 7 = 28 so 2×28 = 56