Primary 4 Maths Weighted Assessment 1 (WA1) – Test 11

1. Last year, 42,615 tourists visited the Science Centre. Round this number to the nearest thousand.

Answer:

📖 REMINDER: Look at the hundreds digit (6) – if it's 5 or more, round up to the next thousand.

2. Write sixty-five thousand, two hundred and seven in number.

Answer:

📖 REMINDER: Break down the words: sixty-five thousand = 65,000; two hundred = 200; seven = 7.

3. Some factors of 36 are 1, 2, 9 and 36. What are the other factors?

📖 REMINDER: List all factor pairs of 36 systematically and identify the missing ones.

1.3 and 12

2.4 and 8

3.4 and 9

4.6 and 12

4. Arrange the digits 3, 8, 1, 4, 5 to form the smallest 5-digit odd number.

Answer:

📖 REMINDER: The smallest 5-digit number starts with the smallest non-zero digit. It must end with an odd digit.

5. Complete the following number pattern.
15, 30, 45, _____, 75, 90

Answer:

📖 REMINDER: Identify the rule by finding the difference between consecutive terms.

6. What is the missing number in the box?
2³⁄₄ = ^?⁄₄

Answer:

📖 REMINDER: Convert the mixed number to an improper fraction: multiply whole number by denominator, then add numerator.

7. Express ¹²⁄₇₂ in its simplest form.

Answer:

📖 REMINDER: Find the highest common factor (HCF) of numerator and denominator, then divide both by it.

8. Arrange the following fractions in increasing order:
²⁄₅, ¹⁄₂, ³⁄₁₀, ⁷⁄₁₀

📖 REMINDER: Convert fractions to equivalent fractions with a common denominator to compare them easily.

1.¹⁄₂, ²⁄₅, ³⁄₁₀, ⁷⁄₁₀

2.³⁄₁₀, ¹⁄₂, ²⁄₅, ⁷⁄₁₀

3.³⁄₁₀, ²⁄₅, ¹⁄₂, ⁷⁄₁₀

4.¹⁄₂, ³⁄₁₀, ²⁄₅, ⁷⁄₁₀

9. Write an equivalent fraction for ³⁄₈.

Answer:

📖 REMINDER: Multiply both numerator and denominator by the same non-zero number to find an equivalent fraction.

10. I am a 4-digit number. I am 3,850 when rounded to the nearest ten. The sum of my digits is 16. What number am I?

Answer:

📖 REMINDER: Numbers that round to 3,850 to nearest ten are from 3,845 to 3,854. Check digit sum condition.

11. This 2-digit number is smaller than 50, it is a common multiple of 3 and 4. The sum of the two digits is 6. What is the number?

Answer:

📖 REMINDER: Find common multiples of 3 and 4 less than 50, then check which has digits summing to 6.

12. The table below shows the favourite fruit of students in Class 4B. Study the table and answer Questions 1 and 2.

Fruit	Number of students
Apple	15
Banana	10
Orange	12
Grapes	8
Total	45

How many students like grapes?

Answer 1:

What fraction of the students in Class 4B like banana?
Give your answer in the simplest form.

Answer 2:

📖 REMINDER: Read data directly from table for first question. For fraction, use: number who like banana ÷ total students, then simplify.

13. Mrs Lee had a jug of juice. She drank ¹⁄₃ of the juice in the morning and ¹⁄₄ of the juice in the afternoon.
What fraction of the juice did she drink altogether? Give your answer in its simplest form.

Answer:

📖 REMINDER: Add the fractions by finding a common denominator, then simplify if possible.

14. A roll of ribbon was 1 m long. Lily used ¹⁄₄ m to wrap a gift and gave some ribbon to her brother.
She had ³⁄₈ m of ribbon left. How much ribbon did she give her brother?

Answer: m

📖 REMINDER: Start with total ribbon, subtract what was used and what is left to find what was given away.

15. Jenny walks 1250 m every morning and 980 m every evening.

a) How many metres does Jenny walk in a day?

Answer a: m

b) What is the total distance that Jenny walks in a 6-day week?

Answer b: m

📖 REMINDER: Add morning and evening distances for daily total, then multiply by number of days for weekly total.

16. A green light blinks every 4 seconds and a yellow light blinks every 6 seconds. Both lights were turned on at the same time.
After how many seconds did both lights blink together for the 2nd time?

Answer: seconds

📖 REMINDER: Find the LCM (Lowest Common Multiple) to determine when they blink together. Multiply by 2 for the 2nd time together.

17. The line graph shows the sales of books during a 2-hour online sale.

a) What was the amount of money earned at 5:00 p.m.?

Answer a: $

b) What was the difference in sales from 4:30 p.m. to 5:00 p.m.?

Answer b: $

c) In which half-hour period did the sales decrease the most?

Answer c: From pm to pm

📖 REMINDER: Read values directly from the table/line graph. Subtract to find differences. Compare decreases between periods.

18. Lisa bought 25 boxes of apples. There were 32 apples in each box. Some of the apples were rotten.

a) After Lisa threw 15 rotten apples away, how many apples were left?

Answer a: apples

b) Lisa wanted to pack the remaining apples into packs of 6. How many apples would be left unpacked at the end?

Answer b: apples

📖 REMINDER: Multiply boxes × apples per box, subtract rotten ones, then divide the remainder by pack size to find leftovers.

19. At a carnival, ⁵⁄₉ of the people were children, ¹⁄₃ of the people were women and the rest were men.

a) What fraction of the people were men?
Give your answer in the simplest form.

Answer a:

b) There were 12 more women than men at the carnival.
Find the total number of people at the carnival.

Answer b: people

📖 REMINDER: Subtract the fractions of children and women from 1 to find men's fraction. Use difference in units between women and men to find total.

Primary 4 Maths Weighted Assessment 1 (WA1) – Test 11

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