TIMO2V2B4 Bài thi thử 04 cho lớp 2- Vòng quốc gia TIMO 2023-2024 .

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1. Alice wrote a 2-digit number on a piece of paper and asked Bobby to guess it. Bobby asked: “Is the number 68?” Alice replied: “One of the digits is correct, the position of that digit is wrong.” Bobby asked again: “Is the number 17?” Alice replied: “One of the digits is correct, the position of that digit is wrong.” Bobby asked again: “Is the number 79?” Alice said: “One of the digits is correct, the position of that digit is correct.” What is the number written by Alice? 2-digit number: Số có 2 chữ số; Digit: Chữ số; Number: Số; The position of that digit: Vị trí của chữ số đó; Correct: Đúng; Wrong: Sai.

2. When Bruce was born, mum was 29 years old. When Bruce will be 28 years old, how old will mum be? Born: Sinh ra; Years old: Tuổi.

3. According to the pattern shown below, what is the number in the blank? Pattern: Quy luật; Number: Số; Blank: Chỗ trống. 12, 15, 21, 30, 42, 57, ___

4. According to the pattern below, what is the English letter in the space? Pattern: Quy luật; English letter: Chữ cái Tiếng Anh; Space: Chỗ trống. P, M, J, G, ___

5. According to the pattern below, how many ※ is / are there in the 7th Group? Pattern: Quy luật; 7th Group: Nhóm thứ 7.

6. Find the value of 37 + 13 - 68 - 13 + 51. Value: Giá trị.