Question

2.6+1.4x3如何简便计算

Answer 1

2.6+1.4x3如何简便计算

2.6+1.4x3
=2.6+4.2
=6.8

2.6+1.4x3简算

6.8

2.6*3.9 0.61*2.6如何简便计算

;2.6*3.9=2.6*（4-0.1）=2.6*4-0.26=10.4-0.26=10.14            0.61*2.6=（0.6+0.01）*2.6=0.6*2.6+0.01*2.6=15.6+0.026=15.626

2.6除以(2.6*2.1)，如何简便计算

=2.6÷2.6÷2.1
=1÷2.1
=1÷10分之21
=21分之10

如何简便计算3.76-0.4x25

3.76-0.4x25
此题不用简便计算，按照正常的计算顺序计算即可。
3.76-0.4x25
=3.76-10
=-6.24

如何简便计算6.84x10.1

如何简便计算
6.84x10.1
=6.84×10+6.84×0.1
=68.4+0.684
=69.084

2.2x3.3+3.3x4.4+4.4x5.5 如何简便计算

2.2x3.3+3.3x4.4+4.4x5.5
=1.1x2x1.1x3+1.1x3x1.1x4+1.1x4x1.1x5
=1.1x1.1x(2x3+3x4+4x5)
=1.21x38
=1.21x(40-2)
=1.21x40-1.21x2
=48.4-2.42
=45.98
(这题主要运用乘法分配律。)

(1.9 1.9x9)÷(4.6-2.6)如何简便计算

(1.9 1.9x9)÷(4.6-2.6)如何简便计算
(1.9 1.9x9)÷(4.6-2.6)
=1.9*（1+9）÷2
=1.9*5
=9.5

（16.5X3+3X7.5)除以6如何简便计算

（16.5X3+3X7.5)除以6
=(16.5+7.5)*3/6
=24/6 *3
=4*3
=12