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In a 6-hectare paddy field, if the rice seedling with 1.5 decimeter row spacing and 1 decimeter Zhu spacing produces 30 grams of rice per Zhu seedling, how many kilograms of rice is there in this field?
6 hectares = 600000 square meters = 6000000 square decimeters
30×【6000000÷（1×1.5）】
=30×4000000
=120000000 G
=120000 kg
How many seedlings can be planted in a 6 hectare paddy field if the seedling spacing is 1 decimeter and the row spacing is 15 cm?
15 cm = 1.5 decimeter
6 hectares = 6000000 square decimeters
6000000 ÷ (1 * 1.5) = 4000000 plants
Transplanting rice seedlings in a paddy field, the spacing of seedlings is 15 cm, row spacing is 20 cm. The area of this paddy field is 0.15 ha,
How many seedlings can be planted?
15 × 20 = 300 (square centimeter) 0.15 hectare = 15000000 square centimeter 15000000 △ 300 = 50000 (plant)
A: it can plant 50000 seedlings
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