Page 91 - NUMINO Challenge_K2
P. 91
Type Study Matrix Operations Puzzle
Cross out numbers in so that the sum of each row and
column is written in .
Properties of Addition and Subtraction through Operations Puzzles
While solving operations puzzles, students will find that 2+3 and 3+2 have the same sum, and 4+5=9 and
9-5=4 are related facts. Thus, students will use the commutative property and inverse operations (addition and
subtraction). An effective strategy in teaching students who are not yet familiar with operations is to precede
the explanation of properties with the use of puzzles.
88 NUMINO Challenge K2
Cross out numbers in so that the sum of each row and
column is written in .
Properties of Addition and Subtraction through Operations Puzzles
While solving operations puzzles, students will find that 2+3 and 3+2 have the same sum, and 4+5=9 and
9-5=4 are related facts. Thus, students will use the commutative property and inverse operations (addition and
subtraction). An effective strategy in teaching students who are not yet familiar with operations is to precede
the explanation of properties with the use of puzzles.
88 NUMINO Challenge K2
