Question

1. subtract: 3.64 - 1.46 =

a 2.18
b 4.18
c 1.18
d 4.20

Explanation:

Step1: Align decimal points

Write the numbers vertically with decimal points aligned:

$$\begin{align*} 3.64\\ -1.46\\ \hline \end{align*}$$

Step2: Subtract hundredths place

Subtract the hundredths: \(4 - 6\). Can't do, borrow from tenths. Tenths place: \(6\) becomes \(5\), hundredths: \(4 + 10 = 14\). So \(14 - 6 = 8\).

Step3: Subtract tenths place

Tenths place: \(5 - 4 = 1\).

Step4: Subtract ones place

Ones place: \(3 - 1 = 2\).

Step5: Combine results

Combine the digits: \(2.18\).

Answer:

\(2.18\) (Option A: 2.18)