1.5×4= 5.8+ 1.2= 45×0.2= 4.08÷8=

0.54÷0.6= 3. 1-2.9= 0. 12÷3= 0.4×0.7=

0.32× 1000= 7÷ 100= 0.8+0.02= 0.84÷0.3=

3.68÷0.0 1= 9+ 1.5= 0.4×0.5= 0.44+0.6=

2.5×0.4= 0. 125×8= 3.6÷0.4= 3.92+7.2=

Second, vertical calculation.

( 1)7.6×0.9 (2) 10.5×0.3 (3)4.25×0. 18

(4) 0.3÷0. 12 (5) 104.78÷26 (6) 34.2÷0.8

Third, off-type calculation can simplify the complex.

8.7× 10. 1 7.06×2.4-5.7 6.35÷0.8÷ 1.25

2.5×6.8×0.4 2.5×3.2× 1.25 2 1.36÷0.8×2.9

102×0.45 8.27+7.52+ 1.73-3.52 0.79×99+0.79

0. 15+ 0.75× 18 72+8÷2.5-30.2 2.8×3.2+3.2×7.2