Vòng thi Quốc gia 2021 - 2022

When Ethan was born, mum was 28 years old. Sister was born 1 year later. When mum is 56 years old, how old will sister be?

• 26

• 27

• 28

• 29

7th May 2021 is Friday. Which day of the week is 1st June 2021?

• Monday

• Tuesday

• Wednesday

• Thursday

In the table, each row follows the same rule. What number should replace the question mark?

• 36

• 40

• 42

• 48

According to the pattern K, N, P, S, U, what is the next English letter?

K 、 N 、 P 、 S 、 U 、 __

• V

• W

• X

• Y

27 children form a line. There are 10 children in front of Eleanor. How many children are behind her?

• 15

• 16

• 17

• 18

Find the value of 1 − 3 + 5 − 7 + 9 − 11 + 13.

• 5

• 7

• 9

• 11

Find the value of 7 × 2 × 7 × 5.

• 245

• 315

• 490

• 700

In the addition puzzle, A and B are different 1-digit numbers. What is A − B?

• 2

• 1

• 3

• 4

What is the value of 8 × 49 + 8 × 67 − 8 × 11 − 8 × 5?

• 800

• 808

• 880

• 80

Find the value of 14 + 16 + 18 + 20 + 22 + 24 + 26 + 28.

• 156

• 168

• 176

• 196