380×6=2280;
380
× 6
.
2280
906÷3=906;
302
3 906
90
6
验算:
302
× 3
.
906
3.27+2.86=6.13;
3.27
+ 2.86
.
6.13
857÷7=122…3.
122
7 857
7
15
14
17
14
3
380×6=2280;
380
× 6
.
2280
906÷3=906;
302
3 906
90
6
验算:
302
× 3
.
906
3.27+2.86=6.13;
3.27
+ 2.86
.
6.13
857÷7=122…3.
122
7 857
7
15
14
17
14
3