17×40=680, 100-63=37, 3.2+1.68=4.88, 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
1.01×99=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

12.5×5.6=1.14÷0.6=7×0.5=0.15×2.2=3.4×0.15=2.88÷0.6=
4×0.25=0.8÷0.4=2.5×7.6=0.8×1.25=1÷0.4=4.8×0.125=
2.72÷0.8=0.84÷0.6=3.52÷1.1=7.2×0.125=0.78÷0.2=6.75×1.5=
1.54÷1.1=2.5×6=3.76÷0.8=0.26÷0.2=4.4×2.5=1.52÷0.4=
0.76÷0.4=0.4÷0.4=0.15×4.4=4.4×0.25=0.5×2=2.4×0.5=