3.2乘以2.5简便方法计算。
3.2乘以2.5简便方法计算。
3.2×2.5
=(0.8×4)×2.5
=0.8×(4×2.5)
=0.8×10
=8
简便方法计算。 0.94乘以2.5减0.45 = = =
0.94*2.5-0.45=(1-0.06)*2.5-0.45=1*2.5-0.06*2.5-0.45=2.5-0.15-0.45=2.5-0.6=1.9
7.5乘以3.1除以2.5简便方法计算
7.5×3.1÷2.5
=7.5÷2.5×3.1
=3×3.1
=9.3
你好,本题已解答,如果满意
请点右下角“采纳答案”。
7.5乘以0.17加上0.49乘以2.5用简便方法计算
7.5x0.17+0.49x2.5
=3x2.5x0.17+0.49x2.5
=2.5x0.51+0.49x2.5
=2.5x(0.51+0.49) 【乘法分配律】
=2.5x1
=2.5
7.35-7.25+5.5乘以2.5用简便方法计算
原式
=(7.35-7.25+5.5)x2.5
=(0.1+5.5)x2.5
=5.6x2.5
=(1.4x4)x2.5
=1.4x(4x2.5)
=1.4x10
=14
10-3.2乘以1.6能用简便方法计算吗?
原式
=10-3.2x1.6
=10-(3x1.6+0.2x1.6)
=10-(4.8+0.32)
=10-5.12
=4.88
供参考。
2.5×3.2×12.5简便方法计算
计算:
2.5×3.2×12.5
=2.5x4x0.8x12.5
=10x10
=100
简便方法计算0.42乘以160加36乘1.6减去34乘3.2
0.42乘以160加36乘1.6减去34乘3.2
=42乘以1.6加36乘1.6减去68乘1.6
=(42+36-68)×1.6
=10×1.6
=16
用简便方法计算2.7乘3.2 +3.2乘2.3 +2.3乘2.7用简便算法计算
2.7*3.2 +3.2*2.3 +2.3*2.7=(2.7+2.3)*3.2+2.3*2.7=5*3.2+2.3*2.7=16+6.21=22.21
37.5加4.5除以1.8乘以2.5用简便方法计算
37.5+4.5÷1.8x2.5
=37.5+9x0.5x2.5÷(9x0.2)
=37.5+0.5x2.5÷0.2
=37.5+1.25÷(1/5)
=37.5+1.25x5
=37.5+6.25
=43.75
谢谢,请采纳