matematika



Estimation of Sums by Rounding Off Data, Fourth Grade Math Test

This online and absolutely free math test is aimed at fourth grade students of maths. In this test, students are required to perform summation of given numbers to an approximate value by rounding off the numbers and performing addition.
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:

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