Samacheer Kalvi Class 4 Maths Solutions Term 2 Chapter 2 Numbers Exercise 2.6

Multiply By 10, 100, 1000

Fill In The Boxes.

Question 1. 10 x 7 = ____
Answer: 10 x 7 = 70. When you multiply a number by 10, you simply add one zero to the end of that number.
In simple words: Multiplying by 10 means putting a zero at the end of the number you are multiplying. So, 10 times 7 is 70.

🎯 Exam Tip: Remember that multiplying by 10 involves shifting the digits one place to the left and adding a zero as a placeholder.

Question 2. 100 × 16 = ____
Answer: 100 × 16 = 1600. When you multiply a number by 100, you add two zeros to the end of that number.
In simple words: For 100 times 16, just write 16 and then add two zeros to make 1600.

🎯 Exam Tip: When multiplying by 100, count the two zeros and append them to the product of the non-zero digits.

Question 3. 1000 × 9 = ____
Answer: 1000 × 9 = 9000. When multiplying by 1000, we add three zeros to the end of the number being multiplied.
In simple words: To multiply 9 by 1000, write 9 and then put three zeros after it, which gives you 9000.

🎯 Exam Tip: The number of zeros in 10, 100, or 1000 directly corresponds to how many zeros you add to the number you are multiplying.

Question 4. 10 × 696 = ____
Answer: 10 × 696 = 6960. Multiplying 696 by 10 means shifting the digits and placing one zero at the end.
In simple words: To find 10 times 696, just add a zero at the end of 696, making it 6960.

🎯 Exam Tip: This pattern works for any whole number: multiplying by 10 just adds a zero at the end.

Question 5. 100 × 96 = ____
Answer: 100 × 96 = 9600. When a number is multiplied by 100, two zeros are appended to its right side.
In simple words: For 100 multiplied by 96, just put two zeros after 96 to get 9600.

🎯 Exam Tip: Quick multiplication by powers of ten is a basic skill that saves time in calculations.

Question 6. 1000 x 6 = ____
Answer: 1000 x 6 = 6000. Multiplying any number by 1000 means adding three zeros at the end of that number.
In simple words: To get 1000 times 6, simply add three zeros to the number 6, which gives 6000.

🎯 Exam Tip: Always double-check the number of zeros you are adding based on whether it's 10, 100, or 1000.