0.7+0.8= 0.28+0.02= 5-3.7= 6.92-2.3-2.7=
1.9-0.46= 8-7.52= 2.4+1.02= 4.7+3.5-4.7=
5.26+7+1.74 27.85-(7.85+3.9)
5.6+2.7-3.6 10-2.75-3.25
15.25-3.1+0.65-4.9
146+250= (148-148) ÷8= 2800÷70= 26÷10÷10=
0.96-0.3= 40-16.5= 6.07+0.4-0.3= 85.7-(15.8-4.8)=
4.9+5.1= 3.7-2.8= 1.84+0.6= 6.6−5.62=
10-3.25= 4.04+6= 0.3+9.47= 5.89−0.98=
3.2+8−3.2= 19-2.26−6.74= 8.7+5.3−8.7+5.3=
240÷12 = 240×5= 2.12-0.9= 6+4×4=
0.54-0.45 = 3.25+1= 1-0.25= 10-6.5+3.5=
①3.6﹣2.8+7.4﹣7.2
②1.25×1.6×25
③÷4
④÷[(﹣)×]