Lesson: Subtracting Tens on a Number Line Mathematics • 1st Grade

In this lesson, we will learn how to subtract multiples of ten from a two-digit number using a number line with numbers up to 100.

Lesson Video

Q1:

Subtract 30 from 78. Use the number line to help you.

Q2:

Find the missing number.

Q3:

You can use a number line to subtract.

Take away ones by counting back in ones.

Take away tens by counting back in tens.

Use number lines to find these differences.