Problem #1
Estimate the sum by rounding each number to the nearest ten and then adding.
19 + 121 = ?
Answer:
Problem #2
Estimate the sum by rounding each number to the nearest ten and then adding.
68 + 79 = ?
Answer:
Problem #3
Estimate the sum by rounding each number to the nearest ten and then adding.
41 + 94 = ?
Answer:
Problem #4
Estimate the sum by rounding each number to the nearest ten and then adding.
82 + 18 = ?
Answer:
Problem #5
Estimate the sum by rounding each number to the nearest ten and then adding.
139 + 17 = ?
Answer:
Problem #6
Estimate the sum by rounding each number to the nearest hundred and then adding.
1458 + 2480 = ?
Answer:
Problem #7
Estimate the sum by rounding each number to the nearest hundred and then adding.
3243 + 1269 = ?
Answer:
Problem #8
Estimate the sum by rounding each number to the nearest hundred and then adding.
2918 + 1125 = ?
Answer:
Problem #9
Estimate the sum by rounding each number to the nearest hundred and then adding.
3644 + 3475 = ?
Answer:
Problem #10
Estimate the sum by rounding each number to the nearest hundred and then adding.
4829 + 2471 = ?
Answer:
Problem #11
Estimate the sum by rounding each number to the nearest thousand and then adding.
4820 + 1965 = ?
Answer:
Problem #12
Estimate the sum by rounding each number to the nearest thousand and then adding.
2385 + 12672 = ?
Answer:
Problem #13
Estimate the sum by rounding each number to the nearest thousand and then adding.
3585 + 1996 = ?
Answer:
Problem #14
Estimate the sum by rounding each number to the nearest thousand and then adding.
3428 + 5149 = ?
Answer:
Problem #15
Estimate the sum by rounding each number to the nearest thousand and then adding.
12630 + 1648 = ?
Answer:
Problem #16
Estimate the sum by rounding each number to the nearest thousand and then adding.
7713 + 23709 = ?
Answer:
Problem #17
Estimate the sum by rounding each number to the nearest thousand and then adding.
4129 + 53157 = ?
Answer:
Problem #18
Estimate the sum by rounding each number to the nearest thousand and then adding.
4635 + 25391 = ?
Answer:
Problem #19
Estimate the sum by rounding each number to the nearest thousand and then adding.
68613 + 26423
Answer:
Problem #20
Estimate the sum by rounding each number to the nearest thousand and then adding.
45734 + 2648 = ?
Answer: