Question

10 cm = ____ mm （options: 1, 10, 100, 1000）

Explanation:

Step1: Recall cm to mm conversion

$1\ \text{cm} = 10\ \text{mm}$

Step2: Calculate 10 cm in mm

$10\ \text{cm} = 10 \times 10\ \text{mm} = 100\ \text{mm}$

Answer:

100