5x+5.5=7
5.6x-x=8.28
4(x-0.8)=8
5x-5=40
2.5x+2.5=5
2(x+0.8)=2.2
26.3+8.7 9.5-2.87
◆6.7×3.05 0.036÷0.24
15.6÷24=
1.6÷12≈(结果保留两位小数)
*6.75÷15=
x+3.8=5.2 2.1÷x=7 4x-14×8=0
4.2x+2.5x=134 2(x+3)=6.8 42-7x= 17.5
12.22×0.98 12.22 0.64÷0.8 64÷8
1.6+0.4 1.6×0.4 4.5÷0.5 4.5×2
1÷0.25= +1 = ×24= + =
400×0.02= 10÷ = 6 ×0= 3× ﹣ ×3=