9点2减3点71加0.8减0点29脱式计算能简便的要简便
9点2减3点71加0.8减0点29脱式计算能简便的要简便
9.2-3.71+0.8-0.29
=(9.2+0.8)-(3.71+0.29)
=10-4
=6
12.8+2点2×9点5脱式计算能简便的要简
12.8+2.2*9.5
=12.8+2.2*(10-0.5)
=12.8+2.2*10-2.2*0.5
=12.8+22-1.1
=33.7
望采纳,谢谢!
脱式计算0.8*9.997-0.997*0.8(能简便的要简便)
原式=0.8x(9.997-0.997)
=0.8x9
=7.2
0.39除以0.13×0点42脱式计算能简便的要简便计算
0.39/0.13x0.42
=3x0.42
=1.26
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四点8×0点九八脱式计算要简便的就简便
4.8×0.98
=4.8×1-4.8×0.02
=4.8-0.096
=4.704
0.72÷0点9+1能简便的简便计算
0.72÷0.9+1
=0.8+1
=1.8
直接算最简单
脱式计算能简便的要简便二点5×4点四怎么简便
2.5×4.4
=2.5×4×1.1
=10×1.1
=11
脱式计算(能简便的要简便)
5/9÷9+4/9*1/9 2/3+(5/6-3/4)÷3/8 7/11÷【2/5-(1-7/10)】
=(5/9+4/9)*1/9 = 2/3+(5/6*8/3-3/4*8/3) =7/11÷(2/5-3/10)
=1*1/9 =2/3+20/9-2 =7/11*10
=1/9 =8/9 =70/11
要采纳最先回答的正确答案,是对答题者劳动的尊重。祝进步!
上面的那个 = 17.5 - 4 = 13.5
下面的那个
=1612×(99+1)
=1612×100
=161200
=(9×8)×1.25
=9×(8×1.25)
=9×10
=90