11. 24.48 ÷ 12 = 15. 12.4 – 0.8 + 0.057 = 12. 70 007 – 25 678 + 7 701 = 16. 4.225 × 12 = 13. 36 + 84 ÷ 12 = 17. 14 × 118 ÷ 4 = 14. 2.4 × 0.3 = 18. ( 54 × 9 ) – ( 108 ÷ 6 ) = 10