500 min =? Hours? Min 7.08 cubic meters =? Cubic meters? Cubic decimeters
500 minutes = 8 hours and 20 minutes
7.08 m3 = 7 m3 80 m3 decimeter
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- 1. 20800 ml = () l 56000 L = () CC 2.75 L = () CC 1603 HL = () CC decimeter = () CC
- 2. 5 cubic decimeters 4 cubic centimeters = () cubic decimeters 7.39 tons = () tons () kg = () kg 68kg 30g = () kg = () g 7:45 = () Big brother and big sister
- 3. Four out of nine is equal to () minutes, eight out of 25 hectares is equal to () square meters
- 4. Lie equation, the area of Shanghai is about 6340 square kilometers, 10460 square kilometers less than that of Beijing. How many square kilometers is the area of Beijing?
- 5. The area of Shanghai is about 6340 hectares or square kilometers
- 6. Beijing covers an area of about () a.96800 hectares, b.96800 square kilometers and c.96800 square meters
- 7. A theater covers an area of 8 square meters B hectares C square kilometers
- 8. How many hectares is 50 hectares equal to 4 square kilometers
- 9. How many square kilometers is 50 hectares equal to 5 square kilometers
- 10. How many acres is 20 hectares?
- 11. Four seventh cubic decimeter = () cubic meter
- 12. 4.05 cubic meters equals () cubic meters long () cubic decimeters
- 13. -The square reduction calculation of cubic × (m-n) × [2 (M + n) (m-n)], M = 5 and 4 / 7, n = 4 and 3 / 7 The correct answer is - 2.56 × 10 to the seventh power,
- 14. -3.782( ) A. It's a negative number, not a fraction. B. It's not a fraction, it's a rational number. C. It's a negative number, it's a fraction. D. It's a fraction, it's not a rational number
- 15. The following statement is correct () A. Positive and negative numbers are called rational numbers. B. 0 is an integer but not a positive number. C. 0 is the smallest number. D. 0 is the smallest positive number
- 16. It is known that the absolute values of four rational numbers a, B, C and D are 1.2.3.4 respectively. Can we write a formula so that a + B + C + D = - 2
- 17. The solution equation (1) 3x of 4 + 2-1 = 7x-3 of 6 + 5 of 12 (X-2) (2) 0.02 0.03-0.2x = 1 + 0.02
- 18. The solution equation: X-1 of 2 = X-1 of 5-3, X-1 of 3 (2x + 1) - 1 of 6 (10x + 1) = 10.3x-0.2-0.03, 0.02 + 0.01x = 0 To solve the equation: 2 / X-1 = 5-3 / X-1 1 / 3 (2x + 1) - 1 / 6 (10x + 1) = 10.3x-0.2-0.03 0.02 + 0.01x = 0.01
- 19. 5 (0.4x-0.9) - 2 (X-5) = 3% (0.03 + 0.01x) If the algebraic expression 3x-1 of 2 and - 2 + X of 3 are opposite to each other, X=
- 20. 1. Four x = five y = six Z 2, 2x + 3y-4z + 3 = 0 to solve the equation