按要求列竖式计算.
(1)带★的要验算.
3.7×0.26=★
39.78÷1.3=★
9.6728÷2.14=
(2)得数保留两位小数.
11÷900.2704÷133.87×2.45.
(1)3.7×0.26=0.962;
3.7 × 0.26
. 222
74 0.962
验算:
0.26 × 3.7
. 182
78 0.962
39.78÷1.3=30.6;
30.6 13 397.8
39 78
78 0
验算:
30.6 × 1.3
. 918
306 39.78
9.6728÷2.14=4.52;
4.52 214 967.28
856 1112
1070 428
428 0
(2)11÷90≈0.12;
0.122 90 110
90 200
180 200
180 20
0.2704÷13≈0.02;
0.0208 13 0.2704
26 104
104 0
3.87×2.45≈9.48.
3.87 × 2.45
. 1935
1548 774
. 9.4815