这4题怎么写风?
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这4题怎么写风?
这4题怎么写风?
这4题怎么写风?
(6.5+3.84)—(2.5+1.84)
=6.5—2.5+3.84—1.84
=4+2
=6
0.4X9.5X25÷1.9
=0.4X25X9.5÷1.9
=10X9.5÷1.9
=95÷1.9
=50
(4.2+16.8)÷0.7
=4.2÷0.7+16.8÷0.7
=6+24
=30
13.2÷8.8X0.8
=13.2÷(1.1X8)x0.8
=13.2÷1.1x(0.8÷8)
=12x0.1
=1.2
2)(6.5+3.84)-(2.5+1.84)=6.5+3.84-2.5-1.84=(6.5-2.5)+(3.84-1.84)=4+2=6
(4.2+16.8)/0.7=4.2/0.7+16.8/0.7=6+24=30