(1) (0.6×4.5+1.9)÷□=10
(2) □÷9×83.7=28.83
(3) □×3.7÷1.5=51.8
(4) 17.94×□÷2.3=19.5
(5) 8.1×13.4+91.46−□÷0.7=150
(6) 1.2×34−5.6−7.8×□=4
(7) 2.7×3.9−□−4.51=2.02
(8) 2.5×4+□×21÷8.4+(3.7+6.3)÷5−1=17
(9) (62−0.17)+□−3.5÷0.14×4=2019
(10) □÷0.7×0.91+1.2÷0.08×18−29=245.29
【解答】
(1)0.46 (2)3.1 (3)21 (4)2.5 (5)4.5 (6)4 (7)10 (8)2.4 (9)2057.17 (10)3.3
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