Subtraction Exercises For Grade 1. The memorization of number bonds and the this exercise booklet comes with answers and is made for students from all levels. It's just like a video game;
From worksheet on mixed addition and subtraction to home page.
Module 2 serves as a bridge from students' prior work with problem solving within 10 to work within 100 as students begin to solve addition and subtraction problems involving teen numbers. Subtraction is one of the basic operations in arithmetic. It's just like a video game; How to do long subtraction.
