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1 Grade
Adding and subtracting up to 10
Comparing numbers up to 10
Adding and subtracting up to 20
Addition and Subtraction within 10 or 20
2 Grade
Adding and Subtracting up to 100
Addition and Subtraction within 10 or 20
3 Grade
Addition and Subtraction up to 1000
Multiplication up to 5
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Problems Involving Adding and Subtracting up to 1000 - Problems with Solutions
By
Catalin David
Problems involving adding and subtracting numbers up to 1000 for third grade.
Problem 1
Add:
400 + 300 =
Solution:
400 + 300 = 700
Problem 2
800 - 600 =
Solution:
800 - 600 = 200
Problem 3
120 + 230 =
Solution:
120 + 230 = 350
Problem 4
470 - 130 =
Solution:
470 - 130 = 340
Problem 5
620 - 410 =
Solution:
620 - 410 = 210
Problem 6
354 + 235 =
Solution:
354 + 235 = 589
Problem 7
746 - 521 =
Solution:
746 - 521 = 225
Problem 8
423 + 256 - 554 =
Solution:
423 + 256 - 554 = ( 423 + 256) - 554 = 679 - 554 = 125
Problem 9
964 - 513 - 251 =
Solution:
964 - 513 - 251 = ( 964 - 513) - 251 = 451 - 251 = 200
Problem 10 sent by Simona
Mike had \$480. He bought a table for \$138 and two chairs for \$160. Mike left with \$
.
Solution:
480 - (138 + 160)= 480 - 298 = 182
Problem 11 sent by Sevdjanka
Find the perimeter of a rectangle if its sides are 200cm and 40 cm.
Solution:
200 + 40 + 200 + 40 = 240 + 240 = 480cm
Problem 12
(683 - 571) + (829 - 315) =
Solution:
(683 - 571) + (829 - 315) = 112 + 514 = 626
Problem 13
274 + [459 - (324 + 123)] =
Solution:
274 + [459 - (324 + 123)] = 274 + (459 - 447) = 274 + 12 = 286
Problem 14
Compare
759 - 325 - 113
<
>
=
759 - (325 + 113)
Solution:
759 - 325 - 113 = 434 - 113 = 321
759 - (325 + 113) =759 - 438 = 321
Then they're equal.
Problem 15
Compare
347 - 125 + 232 - 121
>
<
(347 + 232) - (125 + 121)
Solution:
347 -125 + 232 - 121 = 222 + 111 = 333
347 +232) - ( 125 + 121) = 579 - 246 = 333
Then they're equal
We notice that we can add the numbers with plus between them, then the numbers with minus between them, and then we can do subtraction.
Problem 16
At a shop, 579 kg of oranges were sold in two days. If in the first day 265 kg were sold, how many were sold in the second day?
Solution:
From the quantity sold in the two days we subtract the quantity sold in the first day.
579 - 265 = 314
Problem 17
There are 143 cars on the first floor of a parking building, 132 cars on the second floor and 120 cars on the third floor. How many cars are there in the whole building?
Solution:
143 + 132 + 120 = 275 + 120 = 395
Problem 18
Tim has 678 dollars. One day, he spends 132 dollars and the next day, he spends 135 dollars. How many dollars are left after the two days?
Solution:
678 -(132 + 135) = 678 - 267 = 411 dollars
Problem 19
What number is 104 more than 385?
Solution:
385 + 104 = 489
Problem 20
What number is 435 less than 769?
Solution:
769 - 435 = 334
Problem 21
A book has 359 pages. If Tim has read 233 pages, how many pages are left?
Solution:
359 - 233 = 126
Problem 22
A tablet costs 458 dollars. If Matt needs 142 more dollars to buy it, how many dollars does he have?
Solution:
458 - 142 = $316
Problem 23
In a school, there are 472 boys and 517 girls. How many children are there in the school?
Solution:
472 + 517 = 989
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