0. 18× 15= 0.025× 1.4= 3.06×36=

0.04×0. 12= 3.84×2.6≈ 5.76×3=

(Keep one decimal place)

7. 15×22= 90.75÷3.3 3.68×0.25

16.9÷0. 13= 130 1.55÷3.9 3.7×0. 16

13.76× 1.8= 5.2× 1.6 8.4× 1.3

6.4×0.5 4.48×0.4 5.25×5

35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

2.5÷0.7= (keep three decimal places) 10. 1÷3.3= (business cycle decimal)

10.75÷ 12.5= (check by multiplication) 3.25×9.04= (check by division)

0.43×0.28= 6.45×0.73= 4.6×0.6=

8.9×0.05= 3.08×0.43= 1.5×26.7=

5.22÷29= 18.72÷3.6= 13.95÷3. 1=

7. 15×22 90.75÷3.3 3.68×0.25