2.8×0.4= 1. 12 14-7.4=6.6, 1.92÷0.04=48, 0.32×500= 160, 0.65+4.35= 5 10-5.4=4.6, 4÷20=0.2, 3.5×200=700, 1.5-0.06= 1.44 0.75÷ 15=0.05, 0.4×0.8=0.32, 4×0.25= 1, 0.36+ 1.54=2 1.0 1×99=99.99, 420÷35= 12, 25× 12=300, 135÷0.5=270 3/4 + 1/4 = 1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4 1/6 + 1/2 - 1/6 = 1/2, 7.5-(2.5+3.8)= 1.2, 7/8 + 3/8 =5/4 3/ 10 + 1/5 = 1/2, 4/5 - 7/ 10 = 1/ 10, 2 - 1/6 - 1/3 = 1.5 0.5 1÷ 17=0.03, 32.8+ 19=5 1.8, 5.2÷ 1.3=4, 1.6×0.4= 0.64 4.9×0.7=3.43, 1÷5=0.2, 6÷ 12=0.5, 0.87-0.49=0.38 2/ 1*2= 1 3/ 1*3= 1 3/2*3=2 3/ 1*6=2 4/3*8=6 5/3*20= 12 7/3* 14=6 8/7*40=35 4/3* / kloc-0/6= 12 9/5*27= 15 2/ 1*30= 15 12/7*24= 14 30/ 1*30= 1 5 1/9* 102= / kloc-0/8 19/9*76=36 4/ 9*8= 18 5/8*90= 144 99/98*99=98 3/ 14*6=28 7/ 1*28=4 10/ 1*90=9 5/3* / kloc-0/05=63 19/7*38= 14 5/ 1* 25=5 8/ 19* 16=38 6 1/60* 122= 120 7/2*28=8 6/ 1* 48=8 9/7* 18= 14 25/7* 100=28 9/5*8 1=45 8/9* 16= 18