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