Lesson Worksheet: Multiplying by 9 Mathematics • 3rd Grade

In this worksheet, we will practice modeling multiplication by 9 and reciting the times table of 9 up to 10×9.

Q1:

Complete: 9×=81.

Q2:

Use +, , or × to fill in the blank: 9×2=224.

  • A
  • B+
  • C×

Q3:

Complete the table.

Multiply by 9
2  
3  
4   36
  • A27, 45
  • B18, 27
  • C36, 45
  • D27, 36
  • E18, 36

Q4:

Fill in the blank: 9×3=.

Q5:

This robot multiplies any input by 9 to give an output.

If we give the robot an input of 2, it will give an output of 18, which is 9×2.

What would the output of the robot in the following case be?

What would the output of the robot in the following case be?

Q6:

The sequence chart will help us multiply by 9 using skip counting by nines up to 10 times.

Skip counting by nines
12345678910
11121314151617181920
21222324252627282930
31323334353637383940
41424344454647484950
51525354555657585960
61626364656667686970
71727374757677787980
81828384858687888990

Use skip counting to find 9×2.

Use skip counting to find 9×9.

Q7:

Notice the pattern in 9×4 and 9×5 as we proceed:

9×4=36,9×5=45.

The tens increase and the ones decrease.

Use the same technique to find 9×6.

Use the same technique to find 9×7.

Q8:

Notice how each row is 9 more than the previous one:

Find the result of the following:

Find the result of the following:

Q9:

Fill in the blank: 2 groups of 9 are equal to .

Q10:

David is arranging his Lego bricks in rows. Each row consists of 9 bricks.

He found that the number of Lego bricks in 2 rows can be calculated as 9×2=18.

Fill in the blank with the number of Lego bricks in 4 rows: 9×4=.

How many Lego bricks are there in 7 rows?

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