Subtract All or None: Homework 3.1
In this subtraction worksheet, students solve 11 problems in which zero is subtracted from any number or any number is subtracted from itself.
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Grade 1 Supplement Set A3 - Number & Operations: Addition & Subtraction on the Number Line
Hop your way through a mathematical equation with your first grade class as they learn the idea of moving up and down the number line. Adding and subtracting like little frogs is an engaging and clever way to teach/reinforce this concept.
K - 2nd Math CCSS: Adaptable