Example 2: Mixed Operations

A school orders 8 boxes of pencils. Each box has 24 pencils. They give 5 pencils to each of the 32 students. How many pencils are left over?

Step 1: Total pencils: $8 \times 24 = 192$ Step 2: Pencils given out: $32 \times 5 = 160$ Step 3: Pencils left: $192 - 160 = 32$ pencils ✅

Key Words

Using Estimation to Check

After solving, estimate to make sure your answer is reasonable:

• $245 + 318 \approx 250 + 300 = 550$ ✓
• $563 - 127 \approx 560 - 130 = 430$ ✓ (close to 436)

Remainders in Division

When dividing, think about what the remainder means:

• 48 students split into groups of 5: $48 \div 5 = 9$ R $3$ → You need 10 groups (round up!)
• Sharing 48 stickers among 5 friends: Each gets 9 stickers, 3 are left over

Tip: Draw a picture or diagram if the problem is confusing. Visualizing helps!