Step by step solution :

	3	3	1	0
+	1	5	2	5

Step-1 :
`=0_6+5_6`
`=0_10+5_10`
`=5_10`
`=5_6`
`:.` Sum`=5`

	3	3	1	0
+	1	5	2	5
				5

Step-2 :
`=1_6+2_6`
`=1_10+2_10`
`=3_10`
`=3_6`
`:.` Sum`=3`

	3	3	1	0
+	1	5	2	5
			3	5

Step-3 :
`=3_6+5_6`
`=3_10+5_10`
`=8_10`
`=6xx1+2`
`=12_6`
`:.` Sum`=2` and carry`=1`

	1
	3	3	1	0
+	1	5	2	5
		2	3	5

Step-4 :
`=1+3_6+1_6`
`=1+3_10+1_10`
`=5_10`
`=5_6`
`:.` Sum`=5`

	1
	3	3	1	0
+	1	5	2	5
	5	2	3	5

Step by step solution :

	2	5	5
+	0	3	3

Step-1 :
`=5_6+3_6`
`=5_10+3_10`
`=8_10`
`=6xx1+2`
`=12_6`
`:.` Sum`=2` and carry`=1`

		1
	2	5	5
+	0	3	3
			2

Step-2 :
`=1+5_6+3_6`
`=1+5_10+3_10`
`=9_10`
`=6xx1+3`
`=13_6`
`:.` Sum`=3` and carry`=1`

	1	1
	2	5	5
+	0	3	3
		3	2

Step-3 :
`=1+2_6+0_6`
`=1+2_10+0_10`
`=3_10`
`=3_6`
`:.` Sum`=3`

	1	1
	2	5	5
+	0	3	3
	3	3	2

Step by step solution :

	1	2	3	0
+	0	5	3	5

Step-1 :
`=0_6+5_6`
`=0_10+5_10`
`=5_10`
`=5_6`
`:.` Sum`=5`

	1	2	3	0
+	0	5	3	5
				5

Step-2 :
`=3_6+3_6`
`=3_10+3_10`
`=6_10`
`=6xx1+0`
`=10_6`
`:.` Sum`=0` and carry`=1`

		1
	1	2	3	0
+	0	5	3	5
			0	5

Step-3 :
`=1+2_6+5_6`
`=1+2_10+5_10`
`=8_10`
`=6xx1+2`
`=12_6`
`:.` Sum`=2` and carry`=1`

	1	1
	1	2	3	0
+	0	5	3	5
		2	0	5

Step-4 :
`=1+1_6+0_6`
`=1+1_10+0_10`
`=2_10`
`=2_6`
`:.` Sum`=2`

	1	1
	1	2	3	0
+	0	5	3	5
	2	2	0	5