6.尚美小学的沙坑里一共铺了(
A.9
B.90
C.900
D.9000
A
)$\mathrm{m}^3$的沙子。A.9
B.90
C.900
D.9000
答案
6.A
7.跳远比赛中获得第二名的运动员的成绩可能是(
A.3.9
B.3.85
C.3.8
D.3.75
A
)m。A.3.9
B.3.85
C.3.8
D.3.75
答案
7.A
8.在本届运动会上,五(1)班一共获得了(
A.13
B.26
C.15
D.无法确定
B
)块奖牌。A.13
B.26
C.15
D.无法确定
答案
8.B
三、基本技能(共38分)
1.直接写出得数。(8分)
$\frac{11}{45}+\frac{16}{45}=$
$7-2\frac{3}{5}=$
$\frac{1}{9}+\frac{1}{10}=$
$\frac{17}{12}-\frac{5}{6}=$
$0.25-\frac{1}{5}=$
$\frac{7}{10}+0.8=$
$\frac{3}{2}-0.75=$
$13÷91=$
$\frac{5}{6}+\frac{5}{12}=$
$\frac{2}{3}-\frac{2}{9}=$
$4+2÷3=$
$3\frac{5}{8}+5÷8=$
$9+\frac{8}{17}+\frac{9}{17}=$
$1-0.375-\frac{1}{8}=$
$\frac{1}{3}-\frac{7}{15}+\frac{2}{3}-\frac{8}{15}=$
$1-\frac{3}{10}+\frac{7}{10}=$
1.直接写出得数。(8分)
$\frac{11}{45}+\frac{16}{45}=$
$7-2\frac{3}{5}=$
$\frac{1}{9}+\frac{1}{10}=$
$\frac{17}{12}-\frac{5}{6}=$
$0.25-\frac{1}{5}=$
$\frac{7}{10}+0.8=$
$\frac{3}{2}-0.75=$
$13÷91=$
$\frac{5}{6}+\frac{5}{12}=$
$\frac{2}{3}-\frac{2}{9}=$
$4+2÷3=$
$3\frac{5}{8}+5÷8=$
$9+\frac{8}{17}+\frac{9}{17}=$
$1-0.375-\frac{1}{8}=$
$\frac{1}{3}-\frac{7}{15}+\frac{2}{3}-\frac{8}{15}=$
$1-\frac{3}{10}+\frac{7}{10}=$
答案
1.$\frac{3}{5}$ $4\frac{2}{5}$ $\frac{19}{90}$ $\frac{7}{12}$ 0.05 1.5 0.75 $\frac{1}{7}$ $1\frac{1}{4}$ $\frac{4}{9}$ $4\frac{2}{3}$ $4\frac{1}{4}$ 10 $\frac{1}{2}$ 0 $1\frac{2}{5}$
2.计算下面各题,能简算的要简算。(12分)
$\frac{5}{12}+\frac{3}{2}+\frac{3}{4}$
$3\frac{1}{2}-\frac{7}{13}-6÷13$
$2.63-\frac{2}{21}+7.37-\frac{9}{21}$
$\frac{1}{2}+\frac{1}{4}+\frac{1}{8}$
$\frac{15}{16}-\frac{5}{8}-\frac{1}{4}$
$\frac{9}{10}-(\frac{2}{5}+\frac{1}{4})$
$\frac{5}{12}+\frac{3}{2}+\frac{3}{4}$
$3\frac{1}{2}-\frac{7}{13}-6÷13$
$2.63-\frac{2}{21}+7.37-\frac{9}{21}$
$\frac{1}{2}+\frac{1}{4}+\frac{1}{8}$
$\frac{15}{16}-\frac{5}{8}-\frac{1}{4}$
$\frac{9}{10}-(\frac{2}{5}+\frac{1}{4})$
答案
2.$\frac{8}{3}$ $2\frac{1}{2}$ $9\frac{10}{21}$ $\frac{7}{8}$ $\frac{1}{16}$ $\frac{1}{4}$
3.解方程。(8分)
$\frac{1}{3}+x=\frac{11}{12}$
$5x-\frac{5}{4}=1.75$
$3(x+\frac{9}{10})=9$
$\frac{1}{40}=0.125×3-x$
$\frac{1}{3}+x=\frac{11}{12}$
$5x-\frac{5}{4}=1.75$
$3(x+\frac{9}{10})=9$
$\frac{1}{40}=0.125×3-x$
答案
3.$x=\frac{7}{12}$ $x=0.6$ $x=2\frac{1}{10}$ $x=0.35$
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