Question

write the product in standard and unit form. use the place - value chart to solve.
3 ones × 10 = □ tens
3 × 10 = □
options: 30, 3, 300

Explanation:

Step1: Understand place - value concept

When we multiply a number in the ones place by 10, the digit moves to the tens place.

Step2: Calculate 3 ones times 10

3 ones is 3, and 3×10 = 30. In terms of place - value, 3 ones times 10 gives 3 tens.

Answer:

First blank: 3
Second blank: 30