Rounding Whole Numbers to the Nearest 10 and 100 | 3rd Grade Math

Rounding to the Nearest 10

• 🎯 To round to the nearest 10, identify the multiples of 10 above and below the number.
• 🔑 The number 6,780 is the target. Numbers from 6,775 up to (but not including) 6,785 will round to 6,780.
• ✅ 6,778 is between 6,770 and 6,790, and closer to 6,780, so it rounds to 6,780.
• ❌ 6,774 is between 6,770 and 6,780, but closer to 6,770, so it rounds to 6,770.
• ✅ 6,783 is between 6,780 and 6,790, and closer to 6,780, so it rounds to 6,780.

Rounding to the Nearest 100

• 💡 When rounding to the nearest 100, consider the multiples of 100 around the number.
• 📌 For $3,152, the surrounding hundreds are $3,100 and $3,200.
• 🔑 The halfway point between $3,100 and $3,200 is $3,150.
• 🚀 Since $3,152 is greater than $3,150, it rounds up to $3,200.
• ⚠️ If the number were $3,149, it would round down to $3,100 because it is less than $3,150.