2
2Keywords:
addition
additive identity
inverse
properties of zero
subtraction
Students use number properties to solve problems without calculating.
Displaying results 26 to 29 of 29.
22
1Keywords:
basic facts
equality
equations
subtraction
Students solve different forms of subtraction equations.
2
1Keywords:
addition
discussion
equality
equations
Students solve different forms of addition equations.
2
5Keywords:
addition
equality
Students explore the concept of equality by deciding whether addition sentences are true, false or not proper number sentences.