9 times 10

9 times 10 is 90. In symbols: 9 × 10 = 90, and 10 × 9 = 90 too.

Repeated addition

9 × 10 means adding 9 to itself 10 times: 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 90.

Skip counting by 9

9, 18, 27, 36, 45, 54, 63, 72, 81, 90. The 10th multiple of 9 is 90.

Split the number

9 × 10 = 9 × 5 + 9 × 5 = 45 + 45 = 90.

Double and halve

Halve one number and double the other: 9 × 10 = 5 × 18 = 90.

Division facts

90 ÷ 9 = 10
90 ÷ 10 = 9

About 90

90 is even. Prime factorization: 2 × 3 × 3 × 5.

Nearby multiplications

MultiplicationAnswer
8 × 1080
10 × 10100
9 × 981
9 × 1199
9 × 12108
8 × 972
10 × 11110
7 × 1070

See also: factors of 90.

Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.