What is the sum of the digits in the products of the 9 times table?

The sum of the digits in each product equals 9 (e.g., 9, 18 -> 1+8=9, 27 -> 2+7=9).

How can you check if your answer for 9 X a number is correct?

You can add the number to itself 9 times or use the pattern in the 9 times table.

What is the relationship between 9 and the number 10 in multiplication?

9 is one less than 10, so 9 times any number is 10 times that number minus the number itself.

What happens when you multiply 9 by an even number?

The product will always end in an 8 or a 0.

What happens when you multiply 9 by an odd number?

The product will always end in a 9 or a 7.

What is a quick way to multiply by 9?

Multiply by 10 and then subtract the original number.

9 times tables Flashcards

Student preview

21 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is 9 X 1?

Back

9

Tags

CCSS.3.OA.C.7

2.

FLASHCARD QUESTION

Front

What is 9 X 0?

Back

0

Tags

CCSS.3.OA.C.7

3.

FLASHCARD QUESTION

Front

What is 9 X 5?

Back

45

Tags

CCSS.3.OA.C.7

4.

FLASHCARD QUESTION

Front

What is 9 X 9?

Back

81

Tags

CCSS.3.OA.C.7

5.

FLASHCARD QUESTION

Front

What is 9 X 10?

Back

90

Tags

CCSS.3.NBT.A.3

6.

FLASHCARD QUESTION

Front

What is the pattern in the 9 times table?

Back

The tens digit increases by 1 and the ones digit decreases by 1 (e.g., 09, 18, 27, 36, 45, 54, 63, 72, 81, 90).

Tags

CCSS.3.OA.D.9

7.

FLASHCARD QUESTION

Front

What is 9 X 2?

Back

18

Tags

CCSS.3.OA.C.7

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