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Closest to 100

Uses number cards 1 to 9 to play a game where the goal for each team is to get as close as possible to a total of 100. A cumulative total of their difference to 100 is kept throughout. Addition and subtraction is used strategically and understanding of place value is involved as players move up towards 100.

Additional details
Year level(s)	Year 1, Year 2, Year 3
Audience	Student, Teacher
Purpose	Teaching resource, Student task
Format	Video
Keywords	games, addition, subtraction, place value, fluency, reasoning, understanding, explicit teaching
Curriculum alignment
Curriculum connections	Numeracy
Strand and focus	Number, Build understanding
Topics	Place value, Addition and subtraction
AC: Mathematics (V9.0) content descriptions	AC9M1N04 Add and subtract numbers within 20, using physical and virtual materials, part-part-whole knowledge to 10 and a variety of calculation strategies AC9M3A01 Recognise and explain the connection between addition and subtraction as inverse operations, apply to partition numbers and find unknown values in number sentences AC9M2N04 Add and subtract one- and two-digit numbers, representing problems using number sentences and solve using part-part-whole reasoning and a variety of calculation strategies
Numeracy progression	Additive strategies (P6, P7, P8) Number and place value (P3, P5) Number patterns and algebraic thinking (P3)
Copyright details
Organisation	NSW Department of Education
Copyright	© State of New South Wales (Department of Education), 2020 Creative Commons Attribution 4.0, unless otherwise indicated.