3rd Grade Multiply by 9 Worksheet: 12 Facts, a Digit Pattern and a Finger Trick
The 9s look scary, yet they hide the friendliest pattern of all. This 3rd grade multiply by 9 worksheet lets children find it. It has 12 facts in columns, from 1 × 9 to 12 × 9, in a mixed order. A boy kicks a soccer ball by the title. Once the pattern clicks, children often finish this page faster than the 7s. A second page gives the answer key.
The digit pattern
Look at 2 × 9 = 18, 3 × 9 = 27, 4 × 9 = 36. The tens digit is one less than the number you multiply, and the two digits add up to 9.
So for 7 × 9, the tens digit is 6 and the ones digit is 3: 63. The pattern holds up to 10 × 9 = 90.
At the table: ten groups minus one
Multiplying by 9 is ten groups minus one group. For 12 × 9, think 12 × 10 = 120, then take away 12: 108.
Items k and l, 11 × 9 and 12 × 9, go beyond the usual third grade facts. Here the digit pattern stops working, and ten groups minus one takes over.
After the page: the finger trick
The finger trick covers facts up to 10 × 9. Hold up ten fingers. For 4 × 9, fold down the fourth finger. Three fingers stand on the left and six on the right: 36.
Try it for each fact from 1 to 10, then check the column multiplication answers with the answer key.
About this 3rd grade multiply by 9 worksheet and its answer key page
Download the worksheet: 3rd Grade Multiply by 9 Worksheet: 12 Facts, a Digit Pattern and a Finger Trick
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