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In this lesson, we will learn how to add tens to two-digit numbers.
Mona is making a road with red blocks and blue blocks.
She needs 52 blocks altogether.
Which group of red and blue blocks will make 52?
23 children from Class A joined 30 children from Class F.
How many children were there altogether?
Fares and Dina are making a bridge out of blocks.
They choose 23 green blocks and 30 red blocks.
How many blocks do they use altogether?
What is the missing number in
Complete the number sentence:
All the robots have been working hard to make new numbers.
Which multiple of 10 have they added?
Which number is missing?
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