(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

(Visited 3,496 times, 7 visits today)
ryuju

View Comments