Unit 2: Multiplication and Division of Whole Numbers MGSE4.NBT.5
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations.
Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
MGSE4.NBT.6
Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division.
Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
BIG IDEAS
One of the factors in multiplication indicates the number of objects in a group and the other factor indicates the number of groups.
Unfamiliar multiplication problems may be solved by using known multiplication facts and properties of multiplication and division.
Multiplication may be represented by rectangular arrays/area models.
Some division situations will produce a remainder, but the remainder will always be less than the divisor.
Remainder interpretation depends on the problem situation.
dividend = divisor x quotient + remainder.
The quotient remains unchanged when both the dividend and the divisor are multiplied or divided by the same number.
Estimation is a helpful tool when finding the products of a 2- digit number multiplied by a 2-digit number.
Multiplication and division can be represented using a rectangular area model.
At the end of this unit, I will be able to:
demonstrate mastery of multiplication tables 0-12
use estimation to solve multiplication and division problems.
find factors and multiples
generate patterns involving factors and multiples.
identify prime and composite numbers.
multiply a whole number of up to four digits by a one-digit number
use place value concepts to solve multiplication and division problems
solve real-world problems using equations, rectangular arrays, area models.
find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors
explain the relationship between multiplication and division