Array — 9 × 10 = 90 — free printable diagram

What is 9 × 10?

This array is laid out as 9 rows of 10 dots. Counting every dot gives 90, so 9 × 10 = 90.

Rows

9

Columns

10

Total dots

90

Multiplication

9 × 10 = 90

Division

90 ÷ 9 = 10

• Count the rows, then count how many are in each row: 9 rows of 10 makes 9 × 10 = 90.
• As repeated addition that is 10 added 9 times: 10 + 10 + 10 + 10 + 10 + 10 + … = 90.
• Turning the array on its side does not change the total, which is the commutative property: 9 × 10 = 10 × 9 = 90.
• The same picture shows the two division facts as well: 90 ÷ 9 = 10 and 90 ÷ 10 = 9.