Vòng 2 2016 - 2017

Bài 1. Tìm cặp bằng nhau


Bài 2. Đỉnh núi trí tuệ
Câu 1. If m = 23 then 123 – m =…..
Câu 2. 89736 = 80000 + 9000 + ……+ 30 + 6. The missing number is .
Câu 3. If m = 8dm then the perimeter of the square below is ….dm.
Câu 4. If (a + 15 ): 8 = 5, then a=……
Câu 5. 35 x 456 = 400 x 35 + 35 x ……What is the missing number?
Câu 6. Write >; = ; < in the following blank.
17 – 2 + 4 ….. 6 x 3 + 1
Câu 7. Of the 48 students, 21 are girls. How many more boys are there than girls?
Câu 8. Find the value of P if P : 3 x 5 = 1500
Câu 9. After rouding off the result of the sum to the nearest hundred, the answer is 2500. Which of the following is most likely to be the answer?
25 thousand + 50 b. 24 thousand + 50 c. 24 hundred + 50 d. 25 thousand + 60
Câu 10. There are 3 times as many children as adults at the grarden party. There are 240 children. How many people are there at the party?
Câu 11. The smallest 5 – digits odd number that can be formed using all the digits 5; 0 ; 9; 1 and 3 is.
Câu 12. How many even number are there between 4006 and 4022?
Câu 13. What is the number for 40 thousands 5 tens 8 ones?
Câu 14. Mr Nam is twice as old as his daughter. If is he 50 years old now, how old will his daughter be in tens years’ time? He daughter will be ….years old.
Bài 3. Sắp xếp tăng dần