9.7+4.2= 1.04﹣0.47= 0.25×0.8= 630+2.1=
+ = = = =
1.85﹣+= 1÷×= +0.375=
2.4﹣= (+)×2.4= 5÷×5÷=
10×45%= 1.25×8= 40×(1﹣20%)=
56×10%= 3.2+1.78= ﹣= 0.72÷0.6=
1.25×8= 4÷= ×= ×6÷×6=
=
8.1÷0.9=
205+97= 3.01﹣0.1= 0.25×3×4= 36×25%=
3×a×a= ×1.6= 4÷25%= 16.4+3.06=
1﹣ ÷ = ( ﹣ )÷ =
0.19+0.76= 8÷= 5-= 0.52÷0.4=
28×= 0.5= ÷= ×=
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