We are asked to solve three arithmetic problems: 1. $1086 + 294 = ?$

1. Problem Description

We are asked to solve three arithmetic problems:

1. $1086 + 294 = ?$

2. $63 \div 9 = ?$

3. $4.9 + 9.003 = ?$

2. Solution Steps

Problem 1: $1086 + 294$

We can add the numbers vertically:

```

1086

+ 294

-------

1380

```

So, $1086 + 294 = 1380$

Problem 2: $63 \div 9$

We need to find what number multiplied by 9 gives us

6

3. Since $9 \times 7 = 63$, we have $63 \div 9 = 7$.

Problem 3: $4.9 + 9.003$

We can add the numbers vertically, aligning the decimal points:

```

4.900

+ 9.003

-------

13.903

```

So, $4.9 + 9.003 = 13.903$

3. Final Answer

1. $1086 + 294 = 1380$

2. $63 \div 9 = 7$

3. $4.9 + 9.003 = 13.903$