简便计算: 2.4×99 , 3.19×7.85+1.15×3.19+3.19
简便计算: 2.4×99 , 3.19×7.85+1.15×3.19+3.19
2.4*(100-1)
=2.4*100-2.4*1
=237.6
3.19*7.85+1.15*3.19+3.19
=3.19*7.85+3.19*1.15+3.19*1
=3.19*(7.85+1.15+1)
=31.9
简便计算3.19 x99十3.19
3.19×99+3.19
=3.19×(99+1)
=3.19×100
=319
26.71-6.81-3.19简便计算
26.71-6.81-3.19
=26.71-(6.81+3.19)
=26.71-10
=16.71
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9.24-3.19-2.18的简便计算
=9.24-3.24-2.13
=6-2.13
=3.87
3.19x36+319x0.64简便计算
3.19×36+319×0.64
=3.19×(36+64)
=3.19×100
=319
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3.19乘以942×3.19减3.19简便运算
原数等于
3.19×(942+58)=3190
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3.19x99x3.19用简便演算法
3.19x99+ 3.19 ?
=3.19×(99+1)
=319
4.32+1.15+7.85简便计算
4.32+1.15+7.85简便计算
=4.32+(1.15+7.85)
=4.32+9
=13.32
祝学习进步。
1.15*99+1.15的简便计算
1.15*99+1.15
=1.15*(99+1)
=1.15*100
=115
简便运算5-3.19+1.84
5-3.19+1.84
=5+1.84-3.19
=6.84-3.19
=6.84-3.2+0.01
=3.64+0.01
=3.65