Final Answer:
The estimated answer of 7.4 × 1.80 is 13.32
Step-by-step explanation:
To calculate the estimated answer of 7.4 × 1.80, we need to multiply the two numbers. Since 7.4 is a decimal number, we can use the standard algorithm for multiplying two decimal numbers. According to the algorithm, we need to first align the decimal points of the two numbers and then multiply the digits one by one from the rightmost digit.
7.4
x 1.80
---------
0 + 14 = 14
4 + 12 = 16
Since the last digit of the product is 6, we need to carry the 1 leftward to the leftmost column and add it to the leftmost column of the product. So, the final answer will become 13.32.
In conclusion, the estimated answer of 7.4 × 1.80 is 13.32.