2.NBT.B.7

Mathfriends

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Game Info for Teachers

COMBINED RATING

4.1 Stars

TEACHERS (4)

3.8

STUDENTS (79)

4.4

LENGTH

25 Minutes

GRADES

CAPABILITIES

iPad Support

Spanish Language Support

Text-to-Speech Support

Saves Progress

Description

The Mathfriends are peaceful and respectful of their environment. The Mathfriends are very playful and love to challenge themselves in this agricultural universe. Through three levels set in an imaginary and magical world, you will have to help the Mathfriends take care of the animals by responding to the many challenges they will throw at you. You will have to solve the different additions or subtractions with a result under a thousand by going through the levels. The hundreds, tens and units will be represented in a very fun way to facilitate the understanding of additions and subtractions (Choose animals or select eggs), On an adventure and have fun!

Vocabulary Words

addition

subtraction

expanded form

place value

sum

number line

Instructions

Play through this interactive game to learn about Add and Subtract within 1000. Suitable for Grade 1, Grade 2, K.

Main Concepts

Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

Add and subtract within 1000, using properties of operations, and/or the relationship between addition and subtraction.

Add and subtract within 1000, using concrete models or drawings.

Discussion Questions

Before the Game

What is the answer to an addition problem called? What is the answer to a subtraction problem called?

After the Game

How do we write a number in expanded form? How can we check our answers when we add and subtract? If the sum of two numbers is 154, how many hundreds, tens and ones did you have to collect to express the answer?