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VTMO 2021 — Grade 3 — vtmo

Question 1

Hung’s math class starts at $14 : 45$. At the end, the clock shows the time below. How long does the class last?

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  1. $35$ minutes
  2. $40$ minutes
  3. $45$ minutes
  4. $50$ minutes
  5. $55$ minutes

Question 2

What is the value of $20-10:5+3$?
  1. $7$
  2. $13$
  3. $19$
  4. $21$
  5. $23$

Question 3

Long places ten black marbles in a circle, then inserts a white marble between each neighboring pair of black marbles. Finally he puts a blue marble between each adjacent black and white marble. How many blue marbles are there?
  1. $10$
  2. $20$
  3. $12$
  4. $18$
  5. $22$

Question 4

Jerry writes a number. Tom multiplies it by $3$, Spike adds $3$, Mickey divides by $3$, and Donald subtracts $3$ to obtain $8$. What was Jerry’s number?
  1. $10$
  2. $11$
  3. $33$
  4. $30$
  5. $12$

Question 5

Tien and Son have equal amounts of money. Tien buys three pencils and four notebooks with $7$ dollars left; Son buys three pencils and three notebooks with $28$ dollars left. What does a notebook cost?
  1. $7$ dollars
  2. $28$ dollars
  3. $14$ dollars
  4. $35$ dollars
  5. $21$ dollars

Question 6

Select the appropriate figure to replace the question mark.

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  1. Figure $A$
  2. Figure $B$
  3. Figure $C$
  4. Figure $D$
  5. Figure $E$

Question 7

The $3 \times 3$ table has equal sums in every row, column and diagonal. Find $A$.

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  1. $22$
  2. $31$
  3. $72$
  4. $56$
  5. None of them

Question 8

Two transparent $4 \times 4$ cards are overlaid with the shaded cells coinciding. Which numbered cell matches $A$?

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

Question 9

An goes $A$ → $B$ → $C$ → $D$ → $E$, while Binh goes $A$ → $B$ → $F$ → $G$ → $E$. $BF = 450 m$ and $CD = 200 m$. How much farther does Binh walk?

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  1. $200 m$
  2. $250 m$
  3. $450 m$
  4. $500 m$
  5. $650 m$

Question 10

Five boys say: $A$: “$B$ tells the truth”; $B$: “$C$ lies”; $C$: “$D$ tells the truth”; $D$: “$E$ lies”; $E$: “I tell the truth”. $E$ is incorrect. How many tell the truth?
  1. $1$
  2. $2$
  3. $3$
  4. $4$
  5. $5$

Question 11

An and Binh each buy the same toy. An pays with sixty $2$-dollar notes. Binh uses equal numbers of $1 - , 2$- and $5$-dollar notes. How many notes does Binh use?

Question 12

Nhi forms $2021$ with matchsticks. Move exactly two sticks, without adding or removing any, to make the greatest four-digit number using the displayed digit patterns. What number is it?

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Question 13

Each upper cell equals the sum of the two cells directly below it. Find $A$.

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Question 14

Replace $\triangle$ and $\blacksquare$ with +, −, $\times$ or $\div$ so that $12\triangle4+10\blacksquare2=23$. Using those operations, evaluate $12\triangle2+10\blacksquare4$.

Question 15

The current combined age of An and Binh equals An’s age eight years from now. How old is Binh?

Question 16

January $10$ is an even date and April $11$ an odd date. In $2021$, by how many days does the number of odd dates exceed even dates?

Question 17

A machine halves an even input and subtracts $1$ from an odd input, repeating until $0$. Find the smallest number requiring exactly six steps. For example, $3$ → $2$ → $1$ → $0$ takes three steps.

Question 18

A flock has five chickens. Any three contain at least one rooster. What is the minimum number of roosters?

Question 19

Ten coins start face down. Flip one coin in round $1$, three in round $2$, five in round $3$ and seven in round $4$, after which all face up. At most how many coins are flipped three times?

Question 20

Different letters represent different digits in VTMO $+ LOVE = MEET$. Given $E = 9$, find VTMO.

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