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Planting trees in the fifth grade of primary school mathematics
5. (44+1) × 5 = 225a: 225m away.

Consider that the first tree is 5 meters away from the teaching building and the 44th tree is 5 meters away from the canteen.

6.( 1)2×3+ 10×2=26 (person)

(2)(58-6)÷2+2=28 (Zhang)