Korean Mathematics sample test for grade 5

1. The area of the square shown below is 1. What is the decimal value of the shaded part?

① 0.2 ② 0.25 ③ 0.3 ④ 0.7 ⑤ 0.75


2. Which sentence about numbers below is correct?

8, 12

① The number of divisors of 8 is 3.
② Two numbers have 6 as the greatest common factor.
③ Two numbers have 24 as the least common multiple.
④ The common multiple of the two numbers are 1, 2 and 4.
⑤ The divisors of 12 are 1, 2, 3, 4 and 6.

3. Use the number sentence below to choose the correct equation.
    42 × 38 = 1596

① 42 × 3.8 = 1.596 ② 4.2 × 3.8 = 15.96
③ 0.42 × 3.8 = 159.6 ④ 0.42 × 3.8 = 0.1596
⑤ 0.42 × 0.38 = 159600

4. Choose the right numbers filled in the blank of the picture below.

5. The triangles shown below are congruent. Which expression is correct?

① Vertex a and vertex e are corresponding.
② Vertex b and vertex f are corresponding.
③ Line ab and line df are corresponding sides.
④ Line bc and line de are corresponding sides.
⑤ ∠abc and ∠def are corresponding angles.

6. Choose the figure that has a line of symmetry.

7. Which fraction best represents the conditions below?

This fraction is equivalent to 3.5.
It is an irreducible fraction.
(Irreducible fraction is a fraction that has no other common divisors than 1.)

8. Choose the most reasonable item weighing about 100kg.

9. What is the value of blank in the picture shown below?

10. Sungsu had 45 sheets of colored papers. He used 7/9 of the papers. How many sheets did he use?

① 20 sheets ② 25 sheets ③ 30 sheets ④ 35 sheets ⑤ 40 sheets