Question

1. Find the number from the expanded form of 4 × 105 + 3 × 104 + 2 × 103 + 1 × 100 ? 2. Write the number form of the following a) 7 x 10 6+ 3 x103+2 x 10 +5 b)6 x 10 7 + 3x 10 2 +5 x 10 3. Express 9000 in the exponential form? 4. (10 + 20 + 30) is equal to? 5. write the following in standard form a) 120000000000000000 b) 384500000000000 6. In standard form, the number 829030000 is written as K × 108 where K is equal to ? 7. Simplify a) 9 × 112 -22 × 3 × 170 b) (80 + 50 ) ÷ (30 + 50) 8. Blubber makes up 27 per cent of a blue whale’s body weight. Deepak found the average weight of blue whales and used it to calculate the average weight of their blubber. He wrote the amount as 22 × 32 × 5 × 17 kg. Evaluate this amount? 9. The speed of rocket is 3.12×105 km/hr. find the distance travelled in 5 hour. Express it in standard form? 10. Distance travelled by an object in time t is given as D= (t3-4t). find D when t=5 11. The speed of light in vaccum is 3×108 m/s. Sunlight takes about 8 minutes to reach the earth. Express distance of Sun from Earth in standard form? 12. The number of diagonals of an n-sided figure is 1 2 (n2 –3n). Use the formula to find the number of diagonals for a 6-sided figure (hexagon).

Answer 1

Answer:

it's not appropriate you must 364+#) 1(£(ok

Answer 2

Answer:

you can find it yourself by using a calculator