Bộ 25 đề thi toán học kì I lớp 5 có đáp án( Đề 23)

a) 3,71 > 3,685                                               b) 95,2 > 95,12

a) 7m² = 700dm²                                               b) 6dm² 4cm² = 604cm²

c) 23dm² = 0,23m²                                                  d) 5,34km² = 534ha                           

 $a) \frac{1}{2}+\frac{3}{4}=\frac{2}{4}+\frac{3}{4}=\frac{5}{4}b) \frac{3}{5}-\frac{3}{8}=\frac{24}{40}-\frac{15}{40}=\frac{9}{40}c) \frac{3}{10}\times \frac{4}{9}=\frac{3\times 4}{10\times 9}=\frac{1\times 2}{5\times 3}=\frac{2}{15}d) \frac{5}{8}:\frac{3}{2}=\frac{5}{8}\times \frac{2}{3}=\frac{5\times 2}{8\times 3}=\frac{5\times 1}{4\times 3}=\frac{5}{12}$