Page 6 - NUMINO Challenge_A2
P. 6
Creative Critical
Thinking Math
NUMINO Challenge
Creative Thinking 3 Line segment AE is 8 cm long and is divided into four line segments as
shown below. Line segment AD is 5 cm long, and line segment BE is 6 cm
1 A figure is made by combining nine squares. If the total perimeter of long. Out of line segments AB, BC, CD, and DE, which length(s) cannot be
the figure is 90 cm, find the perimeter of one square. measured?
5 cm
AB CD E
6 cm
Key Point Key Point
The perimeter of the figure First, find the length of line
is made up of sides of the segment BD.
squares. Count the number
of sides. 4 One 1-g weight, one 4-g weight, and one 6-g weight can be placed on
one side of a balance to find dif ferent masses. Find the masses that
2 Three squares are cut out from a rectangular piece of paper as shown can be measured with these weights and a balance.
below. Find the perimeter of the colored portion.
32 cm 1g 4 g 6 g
8 cm
6 cm 2 cm
Key Point Key Point
Remove the biggest square Find the measurable
and find the perimeter of masses by finding the sum
the remaining rectangle. of all the weights.
24 NUMINO Challenge A2 25Measurement
Creative Thinking
In this section, you will be wrapping up the 4 topics you ve learned in a theme by solving different
problems. Boost up your creativity and logical thinking!
Challenge Yourself
01 A grid is divided into three parts as shown below. The squares on the 03 Two 1-g weights, two 3-g weights, and two 5-g weights can be placed
grid have sides of 1 cm. What is the total perimeter for each divided on one side of a balance to find dif ferent masses. Find the masses that
cannot be measured.
part?
1g 1g 3g 3g 5g 5g
1 cm
1 cm
02 In the figure below, A, B, and C are squares. Find the perimeter of the 04 The following figure is made up of one equilateral triangle and three
colored part. squares. If the perimeter of the figure is 18 cm, find the length of one
side of the triangle.
A B 3 cm
4 cm C
26 NUMINO Challenge A2 27Measurement
Challenge Yourself
It s time to check your creativity with math! As you finish a theme, challenge yourself to competition
prep test problems. Don t lose your heart just because it is a competition test. If you ve followed the
process appropriately, you can solve the problems without an effort.
Thinking Math
NUMINO Challenge
Creative Thinking 3 Line segment AE is 8 cm long and is divided into four line segments as
shown below. Line segment AD is 5 cm long, and line segment BE is 6 cm
1 A figure is made by combining nine squares. If the total perimeter of long. Out of line segments AB, BC, CD, and DE, which length(s) cannot be
the figure is 90 cm, find the perimeter of one square. measured?
5 cm
AB CD E
6 cm
Key Point Key Point
The perimeter of the figure First, find the length of line
is made up of sides of the segment BD.
squares. Count the number
of sides. 4 One 1-g weight, one 4-g weight, and one 6-g weight can be placed on
one side of a balance to find dif ferent masses. Find the masses that
2 Three squares are cut out from a rectangular piece of paper as shown can be measured with these weights and a balance.
below. Find the perimeter of the colored portion.
32 cm 1g 4 g 6 g
8 cm
6 cm 2 cm
Key Point Key Point
Remove the biggest square Find the measurable
and find the perimeter of masses by finding the sum
the remaining rectangle. of all the weights.
24 NUMINO Challenge A2 25Measurement
Creative Thinking
In this section, you will be wrapping up the 4 topics you ve learned in a theme by solving different
problems. Boost up your creativity and logical thinking!
Challenge Yourself
01 A grid is divided into three parts as shown below. The squares on the 03 Two 1-g weights, two 3-g weights, and two 5-g weights can be placed
grid have sides of 1 cm. What is the total perimeter for each divided on one side of a balance to find dif ferent masses. Find the masses that
cannot be measured.
part?
1g 1g 3g 3g 5g 5g
1 cm
1 cm
02 In the figure below, A, B, and C are squares. Find the perimeter of the 04 The following figure is made up of one equilateral triangle and three
colored part. squares. If the perimeter of the figure is 18 cm, find the length of one
side of the triangle.
A B 3 cm
4 cm C
26 NUMINO Challenge A2 27Measurement
Challenge Yourself
It s time to check your creativity with math! As you finish a theme, challenge yourself to competition
prep test problems. Don t lose your heart just because it is a competition test. If you ve followed the
process appropriately, you can solve the problems without an effort.
