Lesson: Using Place Value to Add Tens to Two-Digit Numbers

In this lesson, we will learn how to add tens to two-digit numbers.

Sample Question Videos

Q1:

Daniel and Amelia are making a bridge out of blocks. They choose 23 green blocks and 30 red blocks. How many blocks do they use altogether?

Q2:

All the robots have been working hard to make new numbers. Which multiple of 10 have they added?

Q3:

Which number is missing?

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