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How many parts of a square decimeter is 9 square centimeter?
9/100
350 square centimeter = fraction of a square decimeter
350 square centimeter = 7 / 2 square decimeter
56°17′+3°50′=?
60°7′
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- 2. Chinese 111.5 mathematics 129 English 110 arts and Sciences?
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- 4. How to do 56-7 = () - 1?
- 5. Observe the following formulas: 12 + 21 = 33 = 11 × (1 + 2) 23 + 32 = 55 = 11 × (2 + 3) 59 + 95 = 154 = 11 × (5 + 9) Write a similar equation for two digit numbers with ten digits A and one digit B. according to this explanation, can you add the sum of any two digit number and the original number after transposing the position of any two digit number and ten digit number to the original number and divide it by 11? Calculate (- 4) △ 2, 4 △ 2, (- 4) △ 2. When you think a and B are rational numbers (B ≠ 0), is the following formula true? What rules can be summed up from this? ①-a/b=a/-b=- （a/b） ②-a/-b=a/b
- 6. 12+21=33=11X（1+2） 23+32=55=11x(2+3) 59+95=154=11x(5+9） Write a similar equation for two digits with ten digits A and one digit B?
- 7. Prove that 5 ^ 60-1 is a multiple of 56
- 8. Which of the following numbers are multiples of 2? Which numbers are multiples of 5? Which numbers are multiples of two and multiples of five? 35、60、57、100、95、34450、375、86、43、150、320．
- 9. 48 times () = 56 times () How much is it in brackets?
- 10. 56 times 20 =? If a * b = 56, then [a * 10 * b * 10 =? ］；［a/2］*b/2＝？ *It's multiplication and division/
- 11. To make a drawer that is 5 decimeters long, 3 decimeters wide and 1.5 decimeters high, how many square decimeters of wood is needed, and the thickness of the wood is ignored
- 12. The length of the cloth is 60 meters, which is one fourth of the white cloth
- 13. A piece of cloth is 18m long and 60% of white cloth. How long is this piece of cloth?
- 14. 1,65 tons = () kg 150 meters = () km 120 grams = () kg 6.1 square decimeters = () square centimeters 52 cm = how many meters
- 15. Hectare or square kilometer
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- 17. 1500 square centimeters = how many square decimeters = how many square meters = how many hectares
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- 19. 7 ha 300 M2 = () ha
- 20. 118 ha = fraction of a square kilometer