10.5-6.5= 7.5+0.5= 0.78-0.28= 12.8-2.8= 9.6-2.3= 3.8+0.12= 0.8-0.08= 10-7.4= 7.5-3.2= 0.42+0.58= 0.8+0.15= 2.5+0.4= 8.2-2.6= 1.4-0.7= 2.5+4.6= 0.5+9.8= 6.7-2.6= 7.2+5.9= 8.7-3.6= 5.69-2.48= 2.9+4.1= 9.1-6.7= 2.03+1.2= 8.6-4.9= 1.3+2.03= 9.46-7.21= 1.56+2.24= 3.5-1.25=
小数加减(六)
0.75+0.4= 20+0.78= 4.8+4.2= 5.7-3= 4.9-1.7= 1.34+0.8= 2-0.75=
8.7+0.03= 0.2-0.09= 8.5+2.5= 3.4-1.4= 0.68+0.42= 7.82-7.2=
2+9.1= 0.48+0.52= 8.1-5.1= 0.78-0.24= 0.8+0.18= 0.89-0.25=
1-0.98= 0.9+0.1= 1-0.8= 4.5-4= 5.6+4= 5.7+3.3= 10-4.4=
6+6.6= 9.5-2.7= 1-0.55= 3.7+4.8= 7+3.3= 3.25+0.75= 2.7+3.9=
0.7+0.9= 1-0.44= 0.9+1= 14.6-0.4= 10-0.1= 14+0.78=
3+2.7= 5-0.08= 1.64+2.35 = 1.1-1= 8.34-6.22= 12.6+3.4=
1.3+4.3= 7.2+6.9= 9.3-8.8= 4.4+15.99= 19.8-5.6= 96.3-56.2 =
79.2+56.8= 1.9+25.793= 88-69.21= 10-0.6= 4.3+1.7=
93.27-12.56= 15.6+3.2= 45.6+90.1= 30.48+4.295=
75.42-14.34= 103.27+96.7=
小数加减(七)
脱式计算。
8.56-4.65+8.29 5.76+8.65-0.89 32.5+13.29-18.04 24.5+(3.74-0.98)
10-1.39-4.205 60.6-(3.14+0.4) 18-(4.6+2.08)+0.02 4.69+3.02+0.04+2.7
小数加减(八)
用简便方法计算。
6.38+7.56+3.62 24.56-3.81-4.19
5.34+6.18+4.66+3.82 59.2-1.43-8.57
3.92+4.7+0.08+5.3 (3.38+2.75)+0.25
9.1+6.8+3.2+0.9 0.473+5.6+0.527
2.8×0.7= 13×0.15= 0.39×0.6= 0.38×600=
7.05×2.4= 0.46×7.9= 89.3×7.6= 60.5×400=
12.5×8.2×8 0.23×1.4+0.23×8.6 0.125×(80+0.8)
0.4×0.16×2.5 5.6×101 7.85×99
1.15×99+1.15 16.2×101-16.2 4.5×7.8+5.5×7.8
3.05×18= 0.37×2.31= 4.6×18.9= 40.5×4.2=