Fill in the missing numbers:
(a) 8 x .......... = 8
(b) 17 x .......... = 0
(c) .......... x 1 = 5
(d) 10 x .......... = 10
(e) 24 x .......... = 0
(f) 5 x 10 = ..........
(g) 3 x .......... = 30
(h) 7 x 100 = ..........
(i) .......... x 100 = 400
(j) 9 x 10 = ..........
Answer (1)
Let's solve each of the given mathematical expressions step by step.
(a) 8 × _ = 8 The multiplication of any number by 1 will give the same number. Therefore, the missing number is 1. So, 8 × 1 = 8 .
(b) 17 × _ = 0 For any number multiplied by 0, the result is always 0. Thus, the missing number is 0. So, 17 × 0 = 0 .
(c) _ × 1 = 5 Multiplying any number by 1 gives the number itself. Therefore, the missing number is 5. So, 5 × 1 = 5 .
(d) 10 × _ = 10 Similar to part (a), multiplying by 1 gives the same number. Thus, the missing number is 1. So, 10 × 1 = 10 .
(e) 24 × _ = 0 Multiplying any number by 0 gives a result of 0. Therefore, the missing number is 0. So, 24 × 0 = 0 .
(f) 5 × 10 = _ To find the product, simply multiply 5 and 10. 5 × 10 = 50 .
(g) 3 × _ = 30 To find the missing number, divide 30 by 3. 30 ÷ 3 = 10 .
So, 3 × 10 = 30 .
(h) 7 × 100 = _ For this, multiply 7 by 100. 7 × 100 = 700 .
(i) _ × 100 = 400 To find the missing number, divide 400 by 100. 400 ÷ 100 = 4 .
So, 4 × 100 = 400 .
(j) 9 × 10 = _ Multiply 9 and 10 to find the product. 9 × 10 = 90 .
These answers are derived using the fundamental properties of multiplication, where multiplication by 1 yields the original number, and multiplication by 0 yields 0.
