1.7x9.9+0.17
1.7X9.9+0.17的简便计算? -
1.7X9.9+0.17 =0.17*99+0.17 =0.17*（99+1）17
1.7*9.9*0.17=1.7*1.7*0.1*（10-0.1）1.7*1.7-1.7*1.7*0.1*0.1=17*17*0.01-17*17*0.0001 =2.19-0.0219=2.1681
1.7X9.9+0.17 =0.17*99+0.17 =0.17*（99+1）17
1.7*9.9*0.17=1.7*1.7*0.1*（10-0.1）1.7*1.7-1.7*1.7*0.1*0.1=17*17*0.01-17*17*0.0001 =2.19-0.0219=2.1681
0.17X99+0.17=0.17x100=17
(1+0.7)x(9+0.9)=1.7x9.9 =16.83。
1.7X9.9 简便计算 -
1.7×9.9 =1.7×（10-0.1）17-0.17 =16.83
0.17=1.7×0.1 所以原式=1.7×0.1+1.7×9.9=1.7×（0.1+9.9）1.7×10=17
0.17+1.7×9.9怎么简便运算 -
=0.1x1.7+1.7×9.9 =1.7×（0.1+9.9）17 求采纳！！！啊啊啊，
6. 2.1 × 99 + 2.1 7. 1.7 × 9.9 + 0.17 8. 23 × 0.1 + 2.3 × 9.9 1. 0.18 +4.26 -0.18 +4.26 2. 0.58 ×1.3 ÷ 0.58 ×1.3 3. 7.3 ÷4 + 2.7 × 0.25 4. 3.75 × 0.5 - 2.75 ÷ 2 5. 5.26 × 0.125 + 2.74 ÷ 8 a ÷ b ÷ c = a ÷(b× c) 1. 6.3 ÷ 到此结束了？。
9.9x0.17(简便方法计算) -
计算步骤：（10-0.1）乘以0.17 =10乘以0.17-0.1乘以0.17 =1.7-0.017 =1.683
X(.8) 3、简便运算道及答案：道小数的简便计算及答案3.56+4.54+6.44+5.46 5.03-0.25-1.75 4.86+5.24-1.86100道简便计算题及答案。8.13+(1.87-0.5) 23.7-1.6-3.7-8.4 87.4-(21.25+17.4) -8.75300道简便运算及答案。14.6-9.9简便运算100道及答案六年级上册。1.9+1.99+1. 19.43-(6.72+1.43) 2.69-1.35+还有呢？