Mathematics
Grade-3-
Easy

Question

7 × (5 + 2)  =  _______

  1. 39
  2. 14
  3. 70
  4. 49

Hint:

We can use the distributive law to do this question. Distributive law relates multiplication and addition as follows:a left parenthesis b plus c right parenthesis equals left parenthesis a cross times b right parenthesis plus left parenthesis a cross times c right parenthesis. This law shows that first adding some numbers and the multiplying the sum by some numbers gives same result as first multiplying each number by separately with the number and then adding them

The correct answer is: 49


    Step1: We will use the distributive property to multiply this:
    7 cross times left parenthesis 5 plus 2 right parenthesis space equals space left parenthesis 7 cross times 5 right parenthesis plus left parenthesis 7 cross times 2 right parenthesis
    Step2: Now we will do simple multiplication of which are as follows:
    7 cross times 5 equals 35
7 cross times 2 equals 14 
    Step3: Now we have to add these numbers.
    left parenthesis 7 cross times 5 right parenthesis plus left parenthesis 7 cross times 2 right parenthesis space equals space 35 plus 14
    =>49
    So, the answer of the multiplication is 49

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