《2025年口算大通关六年级数学下册苏教版》

$1 - \frac{7}{9} =$ $1.25×8 =$ $(\frac{6}{5})^2 =$ $7×3.14 =$
$1÷\frac{5}{6} =$ $21÷70\% =$ $(\frac{3}{7})^2 =$ $20×3.14 =$
$5×0.28 =$ $\frac{1}{6}÷\frac{1}{36} =$ $(\frac{2}{9})^2 =$ $31.4×0.3 =$
$15.7÷5 =$ $4.15÷\frac{1}{10} =$ $1.1^2 =$ $31.4×0.9 =$
$2 + \frac{7}{6} =$ $0.45÷0.9 =$ $62.8÷0.2 =$ $3.14÷0.01 =$
$\frac{4}{9}×\frac{3}{5} =$ $3^2×3 =$ $3.14×0.2 =$ $0.6×3.14 =$

答案： 第3课时 练习二
口算
$\frac{2}{9}$ 10 $\frac{36}{25}$ 21.98
$\frac{6}{5}$ 30 $\frac{9}{49}$ 62.8
1.4 6 $\frac{4}{81}$ 9.42
3.14 41.5 1.21 28.26
$3\frac{1}{6}$ 0.5 314 314
$\frac{4}{15}$ 27 0.628 1.884

$15.6×2.4 =$ $0.22×4.7 =$ $3.14×3.5 =$
$0.8x + x = 3.6$ $0.8x + 1 = 3.6$ $32\%x = 6.4$

答案： 笔算
37.44 1.034 10.99
$x = 2$ $x = 3.25$ $x = 20$