VTMO 2026 - Grade 3 - Semifinal - SET 8 - Self-study

Question 1

How many odd numbers are there from 3 to 99, inclusive?

1. 98
2. 51
3. 50
4. 49
5. 48

Question 2

The first barrel contains 200 litres of oil. The second contains 25 litres less than the first. How many litres do the two barrels contain altogether?

1. 275
2. 375
3. 225
4. 175
5. 325

Question 3

Ngọc writes TITAN repeatedly, as shown. What is the 27th letter?

1. T
2. I
3. A
4. N
5. E

Question 4

Each letter in the grid represents a number. The numbers on the far right are the row sums; the numbers along the bottom are the column sums. Find $T\times M\times O$.

1. 65
2. 50
3. 60
4. 80
5. 70

Question 5

The 15th of a month is a Sunday. Which day cannot be the last day of that month?

1. Saturday
2. Sunday
3. Monday
4. Tuesday
5. Wednesday

Question 6

How many centimetres long is the pencil?

1. 12 cm
2. 13 cm
3. 10 cm
4. 9 cm
5. 11 cm

Question 7

Find the value of the flower symbol in $150-25=115+\ast$.

1. 2
2. 3
3. 5
4. 10
5. 15

Question 8

The digit sum of 123 is $1+2+3=6$. How many three-digit numbers have digit sum 6?

1. 12
2. 16
3. 17
4. 18
5. 21

Question 9

An gets up late and reaches the bus stop at 9:05, 15 minutes after the bus departed. At what time did the bus leave?

1. 8:45
2. 8:50
3. 8:55
4. 9:15
5. 9:20

Question 10

Find $N=(15+20+25+30+35+40)-(10+15+20+25+30+35)$.

1. 10
2. 20
3. 30
4. 35
5. 40

Question 11

The figure is made from one rectangle and one square. What is its perimeter, in metres?

1. 24
2. 28
3. 30
4. 32
5. 34

Question 12

Question 13

The difference between two three-digit numbers is 217. What is the greatest possible sum of the two numbers?

1. 1781
2. 1757
3. 782
4. 770
5. 1552

Question 14

Delete two digits from 415382, keeping the order of the remaining digits, to make the greatest possible number. Which two digits should be deleted?

1. 4 and 1
2. 1 and 5
3. 1 and 2
4. 1 and 3
5. 2 and 3

Question 15

The L-shaped tile consists of four unit squares as shown. How many of the five figures below can be made by joining two such tiles?

1. 1
2. 2
3. 3
4. 4
5. 5

Question 16

There are 44 passengers to take across a river. Large boats carry 6 passengers each and small boats carry 4 each. How many combinations of full boats can carry all 44 passengers, with no empty seats?

1. 1
2. 2
3. 3
4. 4
5. 5

Question 17

Find an odd three-digit number with three different digits. Its hundreds digit is the smallest even digit greater than 5, and its digit sum is 7.

1. 611
2. 610
3. 403
4. 511
5. 601

Question 18

The first bag contains 10 kg more rice than the second. How many kilograms should be moved from the first bag to the second so that the bags contain equal amounts?

1. 10
2. 4
3. 6
4. 8
5. 5

Question 19

Trung’s clock gains 2 seconds every 30 minutes. He sets it correctly at 07:00:00 today. What will it show at the actual time 14:30:00 on the same day?

1. 14:30:00
2. 14:30:04
3. 14:30:28
4. 14:30:30
5. 14:30:32

Question 20

School A rings its bell every 30 minutes, and school B every 35 minutes. Both ring at 08:00. When will they next ring together? Enter the time as four digits without a colon; for example, 08:45 is entered as 0845.