Addition Strategies by Making Ten

Let's find the number which should be added to 6 to make a 10.

6 + ? = 10

To find the required addend, let’s consider a model with 10 blocks and fill it with 6 balls.

 

7 b
 

Here, notice that we need four more balls to fill all the 10 blocks.
 

7 c
 

6 + 4 = 10
 

So, the required addend is 4.





ds

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Help

The correct answer is

Remember :

The smallest number is the one that comes first while counting.

Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.