Decimals (Addition)：練習問題

Calculate the sum of \(3.4\) and \(2.1\).

Find the value of \(4.25 + 3.6 + 1.15\).

A school held a sports day. In the long jump event, Kelvin jumped \(3.45\) m in his first attempt. In his second attempt, he jumped \(0.8\) m further than his first attempt. What was the total distance he jumped in these two attempts combined?

Find the sum of \( 0.48 \) and \( 12.7 \).

The height of a desk is \( 0.76 \text{ m} \). The height of a chair is \( 0.32 \text{ m} \) shorter than the desk. What is the total height of the desk and the chair combined?

Evaluate: \( 18.06 + 7.95 \).

A ribbon is \(10\) m long. Amy cuts off a piece of \(2.65\) m and another piece of \(3.8\) m. How many metres of ribbon are left?

Tank A contains \( 18.65 \text{ L} \) of water. Tank B contains \( 4.8 \text{ L} \) more water than Tank A. Tank C contains \( 6.25 \text{ L} \) less water than Tank B. How many litres of water are in Tank C?

Find the sum of \( 14.82 \), \( 7.6 \), and \( 0.95 \). What is the result if you subtract \( 5.4 \) from this sum?

A baker is preparing ingredients for three different cakes. The weights of sugar required for each cake are as follows:
- Chocolate Cake: \( 0.45 \) kg
- Vanilla Cake: \( 0.38 \) kg
- Strawberry Cake: \( 0.52 \) kg

a) What is the total weight of sugar needed for the Chocolate Cake and the Vanilla Cake combined in kilograms?

b) What is the combined weight of sugar required for all three cakes in kilograms?