1.58*8.4 3*3 10 15*10%
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6.9x-x=7.9+1.58+8.425.9x=17.9x=179/59x=3又2/59
14.85-1.58×8+31.2÷1.2,=14.85-12.64+26,=2.21+26,=28.21.
3.58-1.58+3.38再答:加减为同级运算,可带着符号换位置
原式=11.58-7又5/11-1.58=10-7又5/11=2又6/11
2.8×0.5+1.58=1.4+1.58=1.4+1.6-0.02=3-0.02=2.98
6.58-(1.58+1.98)=6.58-1.58-1.98=5-(2-0.02)=5-2+0.02=3.02
你确定那是45和5.
4.7x1.58+5.3x1.5810x1.5815.8
14.85-1.58×8+31.2÷1.2=14.85-12.64+26=2.21+26=28.21
1.58×99+158=1.58×(100-1)+158=158-1.58+158=316-1.58=314.42
40再问:过程再答:2.58,3.58,4.58,……
onepointfifty_eight
原式=0.41x(1+0.59)-0.59x8.43+4.42x0.59=0.59x(4.42+0.41-8.43)+0.41=0.59x3.6+0.41=3.6x(1-0.41)+0.41=3.6-
3.64+9.36-(8.43+2.57)=13-11=2
2.7*1.58+2.7*2.42+0.5=2.7X(1.58+2.42)+0.5=2.7X4+0.5=10.8+0.5=11.3
8.43×1/4+84.3×0.05+2.5×0.843=8.43x0.25+8.43x0.5+8.43x0.25=8.43x(0/25+0.5+0.25)=8.43x1=8.433.14平方+68.
8.43小时=(8)时(25)分(48)秒