Subtracting Two-Digit Numbers
Learning Objective
I can subtract two-digit numbers without regrouping.
Key Concepts
When subtracting using a hundreds chart, find the first number and count either to the left or up.
To subtract 10 on a hundreds chart, move up one block, and to subtract 20, move up two blocks.
To solve 74 - 48, Kelvin subtracted 40 by moving up four blocks from 74, then counted back 8 more spaces.
Practice Questions
This lesson includes 3 practice questions to reinforce learning.
View questions preview
1. Using the hundreds chart, what is 65 - 20?
2. Solve 58 - 32 using the hundreds chart strategy. First, subtract 30 from 58. What number do you land on? Then, subtract 2 from that number. What is your final answer?
3. Which of the following shows the correct steps to solve 89 - 51 using the hundreds chart strategy?
Educational Video
Subtract two-digit numbers on a hundreds chart.
Mr. Tom Teaches Again!