Decimal War
This decimal card game is a fun way for your numeracy rotations to practice their decimal addition. Students draw a card from the deck to populate their addition equations, competing to make the largest sum they can with 6 random cards. This can be played in pairs, rotations, large groups, or write a target sum on the board and let your fast finishers have try to beat it.
This game is part of a larger unit where students learn the first skills of decimal operations (specifically focusing on addition and subtraction) and encourages them to sharpen their estimation and rounding skills, empowering them to critically assess and validate the reasonableness of their answers.
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Learning goals
- We are learning to apply knowledge of place value to add and subtract decimals and to use estimation and rounding to check the reasonableness of our answers.
- We are learning to add and subtract decimals and use estimation and rounding to check answers.
Curriculum alignment
AC9M6N04
9
Apply knowledge of place value to add and subtract decimals, using digital tools where appropriate; use estimation and rounding to check the reasonableness of answers
ACMNA128
8.4
Add and subtract decimals, with and without digital technologies, and use estimation and rounding to check the reasonableness of answers
MA3-1WM
old
Describes and represents mathematical situations in a variety of ways using mathematical terminology and some conventions
MA3-2WM
old
Selects and applies appropriate problem- solving strategies, including the use of digital technologies, in undertaking investigations
MA3-3WM
old
Gives a valid reason for supporting one possible solution over another
MA3-7NA
old
Compares, orders and calculates with fractions, decimals and percentages
MA3-RN-01
new
Applies an understanding of place value and the role of zero to represent the properties of numbers
MA3-RN-02
new
Compares and orders decimals up to 3 decimal places
MA3-RN-03
new
Determines percentages of quantities, and finds equivalent fractions and decimals for benchmark percentage values
MA3-AR-01
new
Selects and applies appropriate strategies to solve addition and subtraction problems
Australian Curriculum covers QLD / SA / WA / NT / TAS / ACT.