1000+999 bằng bao nhiêu
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đựng lần 1: 50l + 25l+20l = 95l
đựng lần 2: 95;
lần 3 còn: 270l - 95l -95l = 80l đựng vào 4 can 20l
Như vậy 270l sẽ dùng 2 can 50l, 2 can 25l và 6 can 20l.
28-7x2x5-12=28-14x5-12
=28-70-12
=(-42)-12
=-54
Chúc học tốt!
bài giải
có số quần áo là :
áo : 1 x 10 = 10 ( áo )
quần : 1 x 10 = 10 ( quần )
còn lại khi mẹ lấy ra là :
áo : 10 - 5 = 5 ( áo )
quần : 10 - 3 = 7 ( quần )
đổi : 5 áo 7 quần = 5 bộ quần áo dư 2 quần
đáp số : 5 bộ quần áo
bằng 1999 nhé
1 000 + 999 = 1999 nha