MENTAL MATH
Area and Perimeter of Squares and Rectangles

Measurement
IB Learner Profile
Problem Solving
100

8 + 5 = ?

13

100

What is the perimeter?

Side of a square = 3 cm

12 cm

100

300 cm = ______ m

3

100

An IB Learner Profile that exhibits students' natural curiosity. A learner acquires skills necessary for inquiry and research.

Inquirers

100

I saved Php 1,250 every month from June to December.  How much did I save altogether?

Php 8,750

200

15 - 9 = ?

6

200

What is the perimeter?

Length = 21 cm

Width = 9 cm

60 cm

200

______ g = 12 kg

12,000

200

IB Learner Profile where students give thoughtful consideration to their own learning and experience. They are able to assess and understand their strengths and limitations in order to support their learning and personal development.

Reflective

200

I set aside Php 25 every day for the month of March.  How much did I have at the end of the month?

Php 775

300

8 X 7 = ?

56

300

What is the perimeter?

Side of a square = 152 m

608 m

300

Missing unit:  

The height of the door is about 200 _____.

centimetres

300

An IB Learner Profile where the students show empathy, compassion, and respect towards the needs and feelings of others.

Caring

300

Mom bought half a dozen happy meals.  Each cost Php 99.  She also bought an apple pie which cost Php 65.  How much did she spend in all?

Php 659

400

What is half of a dozen?

6

400

What is the area?

Side of a square = 12 m

144 sq. m

400

Missing unit:

The pot can hold around 500 ______ of soil.

grams

400

An IB Learner Profile where students approach unfamiliar situations and uncertainty with courage and forethought and have the independence of spirit to explore new roles, ideas, and strategies.

Risk-Taker

400

Mom gave me a square-shaped handkerchief.  One side was 32 cm long.  However, she placed some lace all around the handkerchief to make it look pretty.       What was the total length of the lace she used?

128 cm

500

What is 4 added five times?

20

500

What is the area?

Length = 25 m

Width = 13 m

325 sq. m

500

I have a 2-litre container that needs to be filled up using a 200-millilitre cup.  How many cups will I use?

10 cups

500

An IB Learner Profile where students act with integrity and honesty, with a strong sense of fairness, justice and respect for the dignity of the individual, groups, and communities.

Principled

500

Dad covered the entire rectangular garden with grass. The garden was 800 cm long and 3 m wide.  How much grass did dad use?

8 x 3 = 24 square m of grass

or 

800 x 300 = 240,000 square cm of grass

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