The second strategy students can use when using a number line to subtract is breaking apart the subtrahend. Teaches Common Core State Standards 3NBTA2. Multi-digit arithmetic 3rd grade Solve subtraction problems using a number line.
This is a simple short explanation showing students how to find out how much time has elapsed by using a number line.
Math 2nd grade Add and subtract within 100 Addition and subtraction within 100 word problems multi-step Add and subtract on the number line word problems. Find the Difference Read each number line and solve the subtraction problems. Jump is two steps. Number lines are extremely versatile for students to use when representing and explaining math problems.