Week 7: Mid-Term Assessment and Break

Subject: Mathematics

Class: JSS 1

Term: Second Term

Week: 7

Age: 10–12 years

Topic: Mid-Term Assessment

Duration: 40 minutes

Assessment Components

This assessment will evaluate students’ understanding of topics covered in the first half of the term, including:

• Approximation
• Addition and Subtraction of Approximations
• Number Bases
• Number System
• Basic Operations (Addition and Subtraction)

Part A: Objective Questions (20 Fill-in-the-Blank Questions with Options)

1. The process of rounding numbers to the nearest whole number is called ______.
   a) Estimation
   b) Approximation
   c) Addition
   d) Division

2. 458 rounded to the nearest hundred is ______.
   a) 400
   b) 450
   c) 500
   d) 460

3. The number 231 in expanded notation is ______.
   a) 2 + 3 + 1
   b) 200 + 30 + 1
   c) 23 + 1
   d) 200 + 3 + 1

4. In base ten, the place value of 7 in 7,842 is ______.
   a) 7
   b) 70
   c) 700
   d) 7,000

5. When adding numbers, we start from the ______ place.
   a) Thousands
   b) Tens
   c) Hundreds
   d) Units

6. 923 – 467 = ______.
   a) 556
   b) 456
   c) 466
   d) 556

7. The base of the decimal number system is ______.
   a) 2
   b) 5
   c) 10
   d) 20

8. In subtraction, if the top digit is smaller than the bottom digit, we ______.
   a) Ignore it
   b) Borrow from the next column
   c) Add 1
   d) Multiply

9. 101 in base two is equivalent to ______ in base ten.
   a) 3
   b) 4
   c) 5
   d) 6

10. To check subtraction, we use ______.
    a) Addition
    b) Division
    c) Multiplication
    d) Approximation

11. The number 1001 in base 2 is equal to ______ in base ten.
    a) 5
    b) 7
    c) 9
    d) 11

12. The sum of 345 and 678 is ______.
    a) 1013
    b) 1023
    c) 1033
    d) 1043

13. The number 15 in base 10 is written as ______ in base 2.
    a) 1000
    b) 1001
    c) 1110
    d) 1111

14. The correct way to subtract 457 from 823 is to align the numbers by their ______.
    a) Size
    b) Place value
    c) First digit
    d) Middle digit

15. 5 + 8 in base ten equals ______ in base two.
    a) 1101
    b) 1111
    c) 1011
    d) 1001

16. When rounding 678 to the nearest hundred, we get ______.
    a) 600
    b) 700
    c) 680
    d) 690

17. The base of the binary number system is ______.
    a) 2
    b) 4
    c) 8
    d) 10

18. 1100 in base two is equal to ______ in base ten.
    a) 10
    b) 12
    c) 14
    d) 16

19. In the number 345, the place value of 4 is ______.
    a) 40
    b) 4
    c) 400
    d) 3

20. The subtraction of 600 from 945 gives ______.
    a) 335
    b) 345
    c) 355
    d) 365

Part B: Theory Questions (20 Short Answer Questions)

1. Define approximation.
2. Explain why we round numbers.
3. Convert 1010 in base 2 to base 10.
4. Convert 27 from base 10 to base 2.
5. Write 567 in expanded notation.
6. Solve: 345 + 678.
7. Solve: 945 – 567.
8. What is the place value of 9 in 9,873?
9. Convert 1001 in base 2 to base 10.
10. Explain the importance of place value in addition.
11. Convert 23 from base 10 to base 5.
12. Convert 110 in base 2 to base 10.
13. Define carrying in addition.
14. Define borrowing in subtraction.
15. Explain the steps for checking subtraction.
16. Convert 10101 from base 2 to base 10.
17. Convert 45 from base 10 to base 8.
18. What is the result of adding 678 and 234?
19. What is the result of subtracting 135 from 789?
20. Why do we align numbers before adding or subtracting?

Part C: True or False Questions (20 Statements)

1. The decimal system is also called base 10. (True/False)
2. 101 in base 2 is equal to 7 in base 10. (True/False)
3. The binary system uses digits 0 and 1. (True/False)
4. Carrying is required when the sum in a column is less than 10. (True/False)
5. 678 rounded to the nearest hundred is 600. (True/False)
6. The place value of 5 in 567 is 500. (True/False)
7. Subtraction is the inverse of addition. (True/False)
8. Borrowing is needed when the top digit is smaller in subtraction. (True/False)
9. 110 in base 2 is equal to 6 in base 10. (True/False)
10. The sum of 789 and 321 is 1110. (True/False)
11. 123 in expanded notation is 1 + 2 + 3. (True/False)
12. Base 2 is also called the decimal system. (True/False)
13. The binary number 1011 is equal to 11 in base 10. (True/False)
14. The subtraction of 543 from 789 is 246. (True/False)
15. Base 5 uses digits 0, 1, 2, 3, and 4. (True/False)
16. 45 in base 10 is written as 101101 in base 2. (True/False)
17. 1234 rounded to the nearest hundred is 1200. (True/False)
18. Place value affects how numbers are written and read. (True/False)
19. The largest digit in base 8 is 7. (True/False)
20. When adding, we always start from the leftmost digit. (True/False)

Part D: Fill-in-the-Gaps Questions (20 Questions Without Options)

1. The process of estimating a number to the nearest place value is called ______.
2. In base 2, the digits used are ______ and ______.
3. The sum of 345 and 123 is ______.
4. The difference between 678 and 234 is ______.
5. The number 27 in base 10 is written as ______ in base 2.
6. 1001 in base 2 is equal to ______ in base 10.
7. The process of taking 1 from the next column in subtraction is called ______.
8. The decimal system is also called the ______ system.
9. The base of the binary system is ______.
10. The expanded notation of 432 is ______.

11. The process of breaking down numbers according to their place values is called ______.
12. In base 5, the highest digit that can be used is ______.
13. When adding numbers, if the sum of a column is greater than 9, we perform ______.
14. The number 56 in base 10 is written as ______ in base 2.
15. The smallest digit in any number system is always ______.
16. The binary number 1101 is equal to ______ in base 10.
17. The number 78 in base 10 converted to base 8 is ______.
18. In subtraction, if the top digit is smaller than the bottom digit, we must ______ from the next place value.
19. The number 345 rounded to the nearest hundred is ______.
20. 10011 in base 2 is equivalent to ______ in base 10.

Addition and Subtraction – Basic Operations | JSS 1 Mathematics