96×16怎么巧算 2.2×3.3×4.4+4.4×5.5怎样巧算

2.2×3.3×4.4+4.4×5.5怎样巧算  

2.2×3.3×4.4+4.4×5.5怎样巧算

2.2×3.3×4.4+4.4×5.5
=1.1×1.1×（2*3*4+4*5）
=1.21*44
=1.21*11*4
=13.31*4
=53.24
（X*11=X*10+X)

4.4＋4.4×12＋13×5.6巧算

4.4＋4.4×12＋13×5.6
=4.4×（1+12）+13×5.6
=4.4×13+13×5.6
=（4.4+5.6）×13
=10×13
=130

1.1+2.2+3.3+4.4+5.5+6.6+7.7+8.8+9.9怎样简便运算

因为是奇数个等差数列求和 等于中项乘以项数
1.1+2.2+3.3+4.4+5.5+6.6+7.7+8.8+9.9
＝5.5×9
＝5.5×10－5.5
＝49.5

4.4*2.5怎样巧算

把各自分开来算

2.2*3.6+4.4*3.2怎么巧算？

2.2*3.6+4.4*3.2
=2.2*3.6+2.2*6.4
=2.2*（3.6+6.4）
=2.2*10
=22

1.1+2.2+3.3+4.4+5.5+6.6分之2.2+4.4+6.6+8.8+11+13.2

1.1+2.2+3.3+4.4+5.5+6.6分之2(1.1+2.2+3.3+4.4+5.5+6.6)
上下一约 等于2

15.5-5.5x4.4怎么巧算

15.5-5.5x4.4怎么巧算
=15.5-(5+0.5)x4.4
=15.5-5×4.4-0.5×4.4
=15.5-22-2.2
=-8.7

计算 2.2+4.4+6.6+8.8+11+13.2÷1.1+2.2+3.3+4.4+5.5+6.6 （写出过程）

原式应该是（2.2+4.4+6.6+8.8+11+13.2）÷（1.1+2.2+3.3+4.4+5.5+6.6 ）
=（2X1.1+2X2.2+2X3.3+2X4.4+2X5.5+2X6.6）÷（1.1+2.2+3.3+4.4+5.5+6.6 ）=2X（1.1+2.2+3.3+4.4+5.5+6.6）÷（1.1+2.2+3.3+4.4+5.5+6.6 ）
=2

4.4×555+5.5×666如何巧算

原式=22×111+33×111
=（22+33）×111
=55×111
=（50+5）×111
=50×111+5×111
=5550+555
=6105

5.6*16.5/(4.4*10.5)怎样巧算

=（4×1.4×15×1.1）÷（4.4×10.5）
=（4.4×21）÷（4.4×10.5）
=21÷10.5
=2