【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《六年级解方程计算题带答案》,欢迎阅读!
1. 解下列方程。 (1)x + 3 = 9 答:x = 9 - 3 = 6 (2)x - 5 = 7 答:x = 7 + 5 = 12 (3)2x = 10
答:x = 10 ÷ 2 = 5 (4)3x + x =16
答:4x =16, x =16 ÷4=4
2. 解下列方程。 (1)0.8x -0.6=0.4
答:0.8x=0.4+0.6, x=(0.4+0.6)÷0.8=1 (2)25%x+15%x=40%
答:40%x=40%, x=40%÷40%=1 (3)(x-3)÷4=7.5
答:x-3=7.5×4, x=7.5×4+3=33
3. 解下列方程。
(1)9×(50%x+50%)=13.5
答:50%x+50%=13.5÷9, x=(13.5÷9-50%)÷50%=20% (2)(X-6)×9=2.7
答:X-6=2.7÷9, X=2.7÷9+6=6.3 (3)X-0.25=X×20%
答:X-X×20%=0.25, X×80%=0.25, X=0.25÷80%=31.25%
4. 解下列方程。 (1)X+5=X×5
答:X×4=5, X=5÷4 (2)3X+4×4.5=20.15
答:3X=20.15-4×4.5, X=(20.15-4×4.5)÷3=0.05 (3)(X+2.1)÷10.5=3
答:X+2.1=3×10.5, X=3×10.5-2.1=29.4
5. 解下列方程。 (1)12x - 9x = 8.7
答:3x = 8.7, x = 8.7 ÷ 3 = 2.9 (2)(x + 2) × 6 = 18
答:x + 2 = 18 ÷ 6, x = 18 ÷ 6 - 2 = 1 (3)0.36x -0.27 =0.09
答:0.36x =0.09 +0.27 , x =(0.09 +0.27)÷0.36 =1
6. 解下列方程。
(1)x - 0.5 = x × 10%
答:x × 90% = 0.5, x = 0.5 ÷ 90% = 0.56 (2)(x + 3) × 4 = 28
答:x + 3 = 28 ÷ 4, x = 28 ÷ 4 - 3 = 4 (3)(x -1)÷5=1.2
答:x -1=1.2×5, x=1.2×5+1=7
7. 解下列方程。
(1)(x +0.9)×4=12.8
答:x +0.9=12.8÷4 , x =12.8÷4-0.9=2.3 (2)(X-6)×9=2.7
答:X-6=2.7÷9, X=2.7÷9+6=6.3 (3)X-0.25=X×20%
答:X-X×20%=0.25, X×80%=0.25, X=0.25÷80%=31.25%
8. 解下列方程。 (1)X+5=X×5
答:X×4=5, X=5÷4 (2)3X+4×4.5=20.15
答:3X=20.15-4×4.5, X=(20.15-4×4.5)÷3=0.05 (3)(X+2.1)÷10.5=3
答:X+2.1=3×10.5, X=3×10.5-2.1=29.4
本文来源:https://www.wddqxz.cn/fc6c2515f4ec4afe04a1b0717fd5360cbb1a8d53.html