This round of practice pushes estimation strategies further. Across nine fill-in-the-blanks, third graders round 57 and 34 to the nearest ten, take 462 and 718 to the nearest hundred, and use rounding to estimate 43 + 38 and 93 - 36. Tricky cases like 450 (the half-hundred mark) and 845 sharpen their up-or-down judgment. Part B's matching activity pairs numbers like 44, 650, 173, and 86 with their correct rounded values.
Mixing pure rounding with estimation problems shows kids why the skill is useful, not just a trick to memorize.
Style:
Rounding to Nearest 10 and 100
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 57 rounded to the nearest ten is 60.
2. 462 rounded to the nearest hundred is 500.
3. 34 rounded to the nearest ten is 30.
4. 718 rounded to the nearest hundred is 700.
5. 43 + 38 is about 80 when you round each number to the nearest ten.
6. 286 rounded to the nearest ten is 290.
7. 450 rounded to the nearest hundred is 500.
8. 93 - 36 is about 50 when you round each number to the nearest ten.
9. 845 rounded to the nearest hundred is 800.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
44
→ 40
90
650
→ 700
200
173
→ 200
40
86
→ 90
700
Rounding to Nearest 10 and 100
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) 57 rounded to the nearest ten is 60.
2) 462 rounded to the nearest hundred is 500.
3) 34 rounded to the nearest ten is 30.
4) 718 rounded to the nearest hundred is 700.
5) 43 + 38 is about 80 when you round each number to the nearest ten.
6) 286 rounded to the nearest ten is 290.
7) 450 rounded to the nearest hundred is 500.
8) 93 - 36 is about 50 when you round each number to the nearest ten.
9) 845 rounded to the nearest hundred is 800.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
44
→ 40
90
650
→ 700
200
173
→ 200
40
86
→ 90
700
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
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