906+94= 0.7×11=
305-199= ×0= 31×197≈
3.5×0.2= 2.4×=
25+85= 73.9-39.6= = =
18÷6= 798+205≈ 632÷69≈ 803-207≈
× ×
×13 ×4
﹣0.5= +3= ×= 0.8×=
0.23+177%= 2.5×40= 1÷= ×÷×=
101×25= ×0.5= ×= 5+= 2.5× =
3.2÷8= 1.25- = 5× ÷5÷ = 1.25× ×0.8=
× = 1÷ = ÷ = 45×102=