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\(38\text{×}12,5\%=4,75\)
\(Bài\text{ }giải\)
\(Số\text{ }học\text{ }sinh\text{ }nữ\text{ }của\text{ }trường\text{ }tiểu\text{ }học\text{ }đó\text{ }là:\)
\(400\text{×}52\%=208\left(học\text{ }sinh\right)\)
\(Số\text{ }học\text{ }sinh\text{ }nam\text{ }của\text{ }trường\text{ }tiểu\text{ }học\text{ }đó\text{ }là:\)
\(400-208=192\left(học\text{ }sinh\right)\)
\(Đáp\text{ }số:\text{ }192\text{ }học\text{ }sinh.\)
\(x+x:0,5+x:0,25+x:0,125=2022\)
\(x\text{×}1+x\text{×}2+x\text{×}4+x\text{×8}=2022\)
\(x\text{×}\left(1+2+4+8\right)=2022\)
\(x\text{×}15=2022\)
\(x=2022:15\)
\(x=134,8\)
\(a.39,54+8,375=47,915\)
\(b.4,9\text{×}0,24=1,176\)
\(c.496,71-99,873=396,837\)
\(d.14,13:4,5=3,14\)
\(-Từ\text{ }ghép:\text{ }cửa\text{ }sổ.\)
\(-Từ\text{ }láy:\text{ }hững\text{ }hờ.\)
\(1.a:S;\text{ }b:Đ;\text{ }c:Đ;\text{ }d:S.\)
\(3.a.\dfrac{2}{4};\dfrac{2}{6};\dfrac{4}{6};\dfrac{4}{8};\dfrac{2}{8};\dfrac{6}{8}.\)
\(b.\dfrac{1}{2};\dfrac{1}{3};\dfrac{2}{3};\dfrac{1}{2};\dfrac{1}{4};\dfrac{3}{4}.\)