Subject :IMO Class : Class 7
Fill in the blanks.
(i) A number is said to be in the _____ form, if it is expressed as the product of a number between 1 and 10 and the integral power of 10.
(ii) 20 × 30 + 10 × 3 = _____.
(iii) 
| (i) | (ii) | (iii) | |
| A | Standard | 4 | 7 × 2–5 |
| B | Exponential | 4 | 7 × 2–4 |
| C | Exponential | 2 | 7 × 25 |
| D | Standard | 2 | 7 × 24 |
How?.....??..
Ans 1:
Class : Class 8
Howw
Ans 2:
Class : Class 8
Ans 3:
Class : Class 7
Hey there! The correct option is (A).(i).We know that for any real number K from 1 to 10; when it is multiplied by an integral exponent of 10, is known as the standard form of that number. That is of the form K*10^n for any integer n. So the answer of the first one is standard form.(ii).(2^0)*(3^0) (1^0)*3 = 1*1 1*3 = 1 3 = 4.(iii).((2^2)^2*7^2)/(8^3*7) = (2^4*7^2)/(2^9*7) = 2^(4-9)*7^(2-1) = 7*2^(-5).