🎯 Part 1: Rounding to the Nearest 10

Remember: To estimate in subtraction, round both numbers to the nearest 10, then subtract!

a) 47 rounds to ______

b) 83 rounds to ______

c) 156 rounds to ______

d) 234 rounds to ______

a) 47 - 23 ≈ ______ - ______ = ______

b) 83 - 56 ≈ ______ - ______ = ______

c) 156 - 89 ≈ ______ - ______ = ______

💰 Part 2: Money Problems

Round $78 to the nearest $10: ______

Round $34 to the nearest $10: ______

Estimated answer: ______ - ______ = ______

🎲 Part 3: Choose the Best Estimate

🏃 Part 4: Rounding to the Nearest 100

For larger numbers, we can round to the nearest 100!

a) 567 - 234

567 rounds to ______, 234 rounds to ______

Estimate: ______ - ______ = ______

b) 823 - 456

823 rounds to ______, 456 rounds to ______

Estimate: ______ - ______ = ______

🧠 Part 5: Challenge Questions

Choose the TWO best estimation methods:

My estimate is: ____________ books

I chose to round to the nearest _______ because ________________________________