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Mathematical problems in winter vacation garden of sixth grade primary school
1+3=4 means there are four copies.

1÷4=65438+ 0.4% of the total number completed in the first ten days.

40%=2/5

2/5- 1/4=3/20 150 sets of scores.

150÷3/20= 1000 sets There are 1000 sets of school uniforms in this batch.

Check calculation:

1+3=4

1000÷4=250 sets.

1000-250=750 sets in triplicate.

250+ 150=400 sets of reproduction 150 sets.

400÷ 1000=40%