Question

0.68×3.7+3.2×0.37用简便方法计算

Answer 1

0.68×3.7+3.2×0.37用简便方法计算

0.68×3.7+3.2×0.37
=6.8×0.37+3.2×0.37
=(6.8+3.2)×0.37
=10×0.37
=3.7

0.68*3.7+3.2*0.37用简便方法计算

0.68*3.7+3.2*0.37用简便方法计算
0.68*3.7+3.2*0.37
=6.8×0.37+3.2×0.37
=0.37×（6.8+3.2）
=0.37×10
=3.7

3.5*3.7+0.37*65简便方法计算

3.5*3.7+0.37*65
=3.5*3.7+3.7*6.5
=3.7*(3.5+6.5)
=3.7*10
=37

2.24×3.7+0.37×77.6用简便方法计算计算

2.24×3.7+0.37×77.6
=2.24×3.7+3.7×7.76
=3.7×(2.24+7.76)
=3.7×10
=37

0.37×5.6+43×0.037+3.7×0.01简便方法计算

原式=0.37×5.6+4.3×0.37+0.37×0.1=0.37×（5.6+4.3+0.1）=0.37×10=3.7

用简便方法记算：0.37*199+0.37、0.68*0.99

0.37*199+0.37
=0.37*（199+1）
=0.37*200
=0.37*100+0.37*100
=37+37
0.68*0.99
=0.68*1-0.01*0.68
=0.68-0.0068
=0.6732

0.61×0.37+0.37×0.39用简便方法计算

0.61×0.37+0.37×0.39
=(0.61+0.39)×0.37
=1×0.37
=0.37

0.68×98用简便方法计算

0.68×98=0.68×(100-2)=0.68×100-0.68×2=68-1.36=66.64

用简便方法计算：0.37×2.9×40

用简便方法计算：
0.37×2.9×40
=（3.3+0.4）×（3.3-0.4）×4
=（3.3^-0.4^）×4
=(10.89-0.16）×4
=10.73×4
=42.92

0.37 1.75-0.37 1.75用简便方法计演算法

0.37+1.75-0.37+1.75
=(0.37-0.37)+(1.75+1.75)
=0+3.5
=3.5