A math book is 3.78 centimetre's thick. how thick will 21 Math book in the shelf
be?

5. What is ask in the problem?

numbers of math books

thickness of books in the shelf

Thickness of the shelf

Number of shelf used for the books

Other:

6. What are given factors

math books

thickness of books

3.78 cm, 21 math book

Number of shelf used for the books

7. What is the operation use to solve the problem?

addition

subtraction

miltiplicaton

division

8. What is the number sentence?

3.78 + 21 = n

3.78/21 = n

3.78 X 21 = n

3.78 - 21 = n


9. What is the correct answer?

79.28 cm thick in the shelf

79.37 cm thick in the shelf

79.38 cm thick in the shelf

79.36 cm thick in the shelf


10. What is the problem all about?

About the shelf

about the 21 math books

About the thickness of the book

about the thickness of the 21 Math books in the shelf

11. How many books in the shelf?

About the shelf

21 math books

3.78 math books

21.78 math books​