8.45×3.27+8.45×6.73
1个回答
关注
展开全部
8.45×3.27+8.45×6.73=8.45×(3.27+6.73)=84.5
咨询记录 · 回答于2022-09-27
8.45×3.27+8.45×6.73
8.45×3.27+8.45×6.73=8.45×(3.27+6.73)=84.5
这道题的方式就是先找出两项都有的8.45,然后就发现3.27+6.73=10。这就是这道题的简便运算。
2.49×13.87-2.87×2.49-2.49
1.25×6.37×16
2.49×13.87-2.87×2.49-2.49=2.49×(13.87-2.87-1)=24.9
4.59×8.37+0.27×4.59+4.59
1.25×6.37×16=1.25×4×4×6.37=5×4×6.37=127.4
16.48÷2.5÷0.4
4.59×8.37+0.27×4.59+4.59=4.59×(8.37+0.27+1)=44.2476
13.78÷2.5÷0.4
16.48÷2.5÷0.4=16.48÷4÷2.5=4.12÷2.5=1.648
6.32×4.35+3.68×4.35
13.78÷2.5÷0.4=13.78÷0.4÷2.5=13.78
6.32×4.35+3.68×4.35=4.35×(6.32+3.68)=43.5