Test for Integers

Integers are whole numbers that can be positive, negative, or zero. To assess students' understanding of integers, a test can be designed with questions covering various concepts related to integers. Here is a sample test for integers, specifically for Class 7 students.

Test Questions:

1. Which of the following numbers are integers?
a) 3/4
b) -5
c) √9
d) 2.5

2. Identify the integer that is closest to zero from the given options.
a) -8
b) -3
c) 2
d) 5

3. Evaluate the following expression:
6 - (-7) + 3

4. Add the two integers: -12 and 6.

5. Subtract the two integers: -3 and (-9).

6. Multiply the integers: -5 and 4.

7. Divide the integers: -30 and 5.

8. Find the absolute value of -9.

9. Which of the following is the smallest negative integer?
a) 0
b) -1
c) -10
d) 1

10. Solve the following equation for x: -2x + 5 = 17.

Answer Explanation:

1. Integers are whole numbers, so the correct answers are b) -5 and c) √9 = 3.

2. The integer closest to zero is b) -3.

3. Simplifying the expression, we have 6 - (-7) + 3 = 6 + 7 + 3 = 16.

4. The sum of -12 and 6 is -6.

5. Subtracting -9 from -3 gives -3 - (-9) = -3 + 9 = 6.

6. Multiplying -5 and 4 gives -20.

7. Dividing -30 by 5 gives -6.

8. The absolute value of -9 is 9.

9. The smallest negative integer is c) -10.

10. Solving the equation, we have -2x + 5 = 17. Subtracting 5 from both sides, we get -2x = 12. Dividing by -2, we find x = -6.

Conclusion:

This test for integers covers concepts such as identifying integers, adding, subtracting, multiplying, and dividing integers, finding absolute values, and solving equations involving integers. It assesses the students' understanding of these concepts and their ability to apply them in different scenarios. By evaluating the students' performance in this test, teachers can identify areas of improvement and provide targeted instruction to enhance their understanding of integers.