17×40= 100-63= 3.2+1.68= 2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4= 4÷20= 3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54= 1.01×99= 420÷35= 25×12= 135÷0.5= 3/4 + 1/4 = 2 + 4/9 = 3...
7.2+2.8= 78×100= 0÷150= 32÷0.4= 1300×300=
2.6×100= 150÷15= 32×0.4= 2600÷100=
32.8÷8= 1.64÷4= 300÷60= 18×700=
400÷80= 64÷4= 360÷20= 420÷70=
9×4= 540÷90= 74÷2= 360÷40=
270÷30= 540...