About this Study Set
This study set covers Mathematics through
25 practice questions.
Test your understanding of addition and subtraction with these factual, medium-difficulty questions suitable for pre-teens. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 25 questions from the
Addition and Subtraction Mastery study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the sum of the first 10 positive integers?
2
If a baker makes 150 cookies and sells 128, how many cookies are left?
3
What is the difference between 1000 and 257?
4
A library has 3,456 fiction books and 1,987 non-fiction books. What is the total number of books?
-
A
4,443
-
B
5,433
-
C
5,443
-
D
6,433
5
What number, when added to 75, equals 120?
6
A farmer plants 245 apple trees and 189 pear trees. How many more apple trees than pear trees did the farmer plant?
7
Calculate 500 - (150 + 75).
8
What is the value of 999 + 1?
-
A
1000
-
B
990
-
C
1001
-
D
999
9
A school ordered 850 pencils and 675 pens. How many writing implements were ordered in total?
-
A
1,425
-
B
1,525
-
C
1,325
-
D
1,625
10
If you subtract 42 from a number and get 58, what was the original number?
11
What is the sum of the digits in the number 789?
12
A train travels 450 km in the morning and 375 km in the afternoon. What is the total distance traveled?
-
A
725 km
-
B
825 km
-
C
775 km
-
D
875 km
13
What is the result of 2024 - 1999?
14
A collection of stamps has 1,250 international stamps and 980 local stamps. How many stamps are there in total?
-
A
2,130
-
B
2,230
-
C
2,030
-
D
2,330
15
Find the missing number: 300 + ? = 525
16
A shopkeeper had 1,000 apples. He sold 782. How many apples are left?
17
What is the difference between 500 and 101?
18
A construction project requires 5,000 bricks. If 3,456 bricks have been delivered, how many more are needed?
-
A
1,544
-
B
1,454
-
C
1,644
-
D
1,744
19
What is 150 added to 280?
20
A recipe calls for 2 cups of flour. If you only have 1 and 1/4 cups, how much more flour do you need?
-
A
3/4 cup
-
B
1/2 cup
-
C
1/4 cup
-
D
1 cup
21
What is the result of 7 x 10 - 1?
22
If a bus has 45 seats and 38 are occupied, how many seats are empty?
23
What is the sum of 1,000, 2,000, and 500?
-
A
3,500
-
B
4,000
-
C
3,000
-
D
2,500
24
A jug contains 2 liters of water. If 500 ml is poured out, how much water remains?
-
A
1.5 liters
-
B
1 liter
-
C
0.5 liters
-
D
1.75 liters
25
Calculate the difference between the number of days in a leap year and a common year.
-
A
1 day
-
B
0 days
-
C
2 days
-
D
3 days
