六、脱式计算。
(1) 12.6÷0.28-4.5 (2) 2.24×16.5÷0.6 (3) (4.2+10.8) ÷0.25
(4) 23.2×1.3×0.6
七.简便计算:
(1)0.6×12.5×0.8
(4)7.8×+5.2+2.2-5.2
(7) 2.18×99+2.18
(10)7.18÷0.5÷71.8 (11)12.7 ÷0.06-13 (6) 14.4÷2.4-5.7 (2) 0.78×101 (3) 46×9.9 (5) 0.37×10.1-0.37×0.1 (6) 48×0.25 (8) 7.98 ÷0.25÷4 (9) 0.125×2.5×0.8×4 -4.56-2.7 (5)12.7+1.5