1x82x4
Yes
Infinite
Yes.
Infinitely many.
multiplication and division problems like: 10x14, 30x7, and for your good math students maybe: 72x61, or 92x31
proper fraction
22x111x21x222x11
1x82x4
in a math book
Yes
Infinite
This is most often defined as the set of multiplication problems created by single-digit numbers. It includes problems from 1 x 1 to 9 x 9. Some people extend the definition to include multiplication problems up to 12 x 12.
Multiplication problems can be solved by consulting a multiplication table. Large numbers can be multiplied using a technique called Long Multiplication. One can also use an electronic calculator.
If you are looking for math word problems for upper elementary students, a good website to go to is: http://www.superteacherworksheets.com/word-problems.html This site offers math word problems for addition, subtraction, multiplication, division, and more.
Yes.
9*6=54