Toán tư duy lớp 4 Bài toán cân thăng bằng

MathSpace Education

Topic: Shape Balance

Sha

I. LEVEL 1

What number should be the repla

A

Answer: __________

C

Answer: __________

E

Math in E ape balance

acement for the question mark?

B

_________ Answer: _______________

D

_________ Answer: ___________

F

English Course

Page 1

____

________

MathSpace Education Math in English Course

Topic: Shape Balance Page 2

Answer: __________________

II. LEVEL 2

Problem 1:

What is the value represented by ?

(A) 3 (B) 4 (C) (D) 6 (E) 8

Answer: ________________________________________

Problem 2: Find the value of each shape

Answer: ________________________________________

Problem 3: In the diagram, two equal-armed balances are shown.

How many would it take to balance ?

(A) 2 (B) 1 (C) 4 (D) 5 (E) 3

Answer: ________________________________________

Problem 4: In the diagram, each scale shows the total mass (weight) of the shapes on that scale.

MathSpace Education Math in English Course

Topic: Shape Balance Page 3

What is the mass (weight) of a ?

(A) 3 (B) 5 (C) 12 (D) 6 (E) 5.5

Answer: ________________________________________

Problem 5: To cook an elixir a witch needs five types of herbs exactly in the amounts weighed by the scales in the picture. The witch knows that she needs to put 5 grams of sage into the elixir. How manr grams of hibiscus does she have to use ? (The weight of the scales is irrelevant.)

(A) 50g (B) 40g (C) 30g (D) 20g (E) 10g

Answer: ________________________________________

Problem 6:

All four scales shown are balanced. One possible replacement for the ? is

Answer: ________________________________________

Problem 7:

MathSpace Education Math in English Course

Topic: Shape Balance Page 4

All three scales shown are balanced. One possible replacement for the ? is

(A) (B) (C)

(D) (E)

III. LEVEL 3

Problem 1: In the diagram, two equal-armed balances are shown. How many would it take to balance one ?

(A) 1 (B) 2 (C) 3 (D) 4 (E) 5

Answer: ________________________________________

Problem 2: The three weighing scales are balanced as shown. What is the sum weight of the

these 3D shapes in grams ?

(A) 20 (B) 22 (C) 27 (D) 31

Answer: ________________________________________

Problem 3: How many are equivalent to thr weight of one ?

MathSpace Education

Topic: Shape Balance

Answer: _________________

Problem 4: There are three kind total weight as two cylinders, and many cubes will have the same to

Answer: _________________

Problem 5: On one of the plates melons. When we put a melon ex equilibrated.

A. the same as 2 oranges

C. the same as 4 oranges

E. the same as 6 oranges

Answer: _________________

Math in E

ds of objects, cylinders and cubes. Three spheres

d five spheres have the same total weight as six

otal weight as five cylinders ?

s of a balance there are 6 oranges and on the oth xactly like the others on the orange plate, the bal

B. the same as 3 oranges

D. the same as 5 oranges

English Course

Page 5

s have the same x cubes. How

her there are

lance is