Question

Lena has 2.3 kg of sugar. She uses 410 g for a cake.
How much sugar does she have left?
Give your answer in kg

Answer 1

Answer:

1.89 kg

Step-by-step explanation:

$2.3 \: kg \: = 2.3 \times 1000 = 2300 \: g \\ sugar \: used = 410 \: g \\ sugar \: left \\ = 2300 - 410 \\ = 1890 \: g \\ = \frac{1890}{1000} \: kg \\ = 1.89 \: kg$