What should be added to 40 × 30 so that the sum is 12500 ÷ 10 ?

Given, 40 × 30 + x = 12500 ÷ 10 , where x is the number to be added. Calculating RHS, we have: 12500 10 = 1250 On LHS, we have: 40 × 30 + x = 1200 + x Equating LHS and RHS, we get: 1200 + x = 1250 x = 1250 - 1200 = 50 . Hence, the number to be added is 50 .

Find the value of 4815 × 44 + 4815 × 52 + 4 × 4815 using suitable property.

Given, 4815 × 44 + 4815 × 52 + 4 × 4815 To find the value using suitable property. We know, The distributive property of multiplication over addition states that, If a , b and c are three whole numbers, then: a b + a c = a b + c Therefore, we get: 4815 × 44 + 4815 × 52 + 4 × 4815 = 4815 44 + 52 + 4 = 4815 × 100 = 481500 Hence, the required value is 481500 by using distributive property.