If 42 ⋅ 69 = 2,898, what is 4.2 × 6.9?
A. 289.8
B. 2.898
C. 28.98
D. 2,898
To find 4.2 × 6.9, we can simply move the decimal point one place to the left for both numbers and then multiply:
4.2 × 6.9 = 42 × 6.9 / 10
Multiplying 42 by 6.9 gives us:
42 × 69 = 2,898
We divide by 10, so the final answer is:
4.2 × 6.9 = 2,898 / 10 = 289.8
Therefore, the answer is A. 289.8.
To find the product of 4.2 × 6.9, you can follow these steps:
Step 1: Multiply the whole numbers: 4 × 6 = 24.
Step 2: Multiply the decimal parts: 0.2 × 0.9 = 0.18.
Step 3: Add the results of the whole numbers and decimal parts: 24 + 0.18 = 24.18.
Therefore, the correct answer is not among the options provided. The correct answer is 24.18.