4.NBT.B.4

Number Number on The Wall: The Pirates Puzzle

Experience Awakening - Our open-world educational game

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Game Info for Teachers

COMBINED RATING

4.1 Stars

TEACHERS (8)

4.3

STUDENTS (874)

3.9

LENGTH

20 Minutes

GRADES

CAPABILITIES

iPad Support

Spanish Language Support

Text-to-Speech Support

Saves Progress

Description

Join Captain Jack on an exciting pirate adventure where you'll travel the world, solve number puzzles, and find hidden treasures. With Captain Jack as your guide, tackle math challenges involving addition and subtraction to unlock secrets, including his own past and the ultimate pirate loot. Uncover riches from around the globe on this thrilling voyage that rewards clever thinking!

Vocabulary Words

addition

subtraction

digit

thousands

hundreds

tens

ones

borrow

Instructions

Play through this interactive game to learn about Fluently Add And Subtract Using Standard Algorithm. Suitable for Grade 3, Grade 4, Grade 5.

Main Concepts

Fluently subtract multi-digit whole numbers using the standard algorithm.

Fluently add multi-digit whole numbers using the standard algorithm.

Use written methods without concrete models.

Standard algorithms for addition and subtraction are based on decomposing numbers written in base-ten notation; this reduces addition or subtraction of two multi-digit whole numbers to a collection of single-digit computations of place-value units.

Position the unknown quantity on the left and right side of the equal sign.

While moving to the right across the places in a number the digits represent smaller units.

Place value in base ten groups numbers in bundles of 10’s with each place value being 10 of the prior unit. (10 ones = 1 ten, 10 tens = 1 hundred etc)

Use algorithms for addition and subtraction that allow for scholars to regroup place value when necessary.

For subtraction you can also check all potential ungroupings first and then perform all the subtractions.

For subtraction, students need to evaluate whether ungrouping and regrouping is necessary. Students may either treat each place value column separately and ungroup and subtract before moving on.

Discussion Questions

Before the Game

What is the sum of two numbers? What is the difference of two numbers?

After the Game

Why did you have to borrow (regroup) when the number to the left was smaller than the number to the right in subtraction problems? What did you do when adding if the digits totaled more than 9?