4th Grade Multiplication
57 x 3
171
49,788 + 6,597 = n
Solve for "n"
n= 56,385
Round 2678 to the nearest thousands place.
2700
600 x 50=
30,000
The space INSIDE of a square or rectangle is called the _________. It can be found by calculating length times width.
Area
A factor pair of 24 is 1 and 24. Another factor pair of 24 is?
6 x 4 or 8 x 3 or 12 x 2
(30 + 4) x (60 + 2) = k
k = 2,108
When rounded to the nearest thousand, about how much is the sum of 34,750 and 6,721?
About 42,000
3,000 x 6
18,000
5,400, 90, 120, and 2 are the ___________ of the problem 92 x 61.
Partial Products
234 x 4
936
(2,108 - 789) x 6 = w
w= 7,914
About how much is 53 times 29?
55 x 30 = 1,650
(using compatible numbers and rounding)
OR
50 x 30 = 1500
(using rounding)
250 x 1,000 = p
p= 250,000
The first 5 ________ of 8 are: 8, 16, 24, 32, 40
Multiples
38 x 25
950
Last season, Camryn's softball team scored 79 points. This season, her team scored three times as many points as before. How many more points did her team score this season than last season?
79 x 3 = 237
237 - 79 = 158
Camryn's team scored 158 more points this season than last season.
Round the product of 3 and 278 to the nearest ten.
3 x 278 = 834
830
Ten times more than 72,340 is?
723,400
This property states that you can change the grouping of factors, and that the product will stay the same.
Associative Property
24x56
1,344
At the Skechers Walk, Wood Elementary School raised $12,491. Madrona Middle School raised $4,578, Fern Elementary raised $9,760, and Hickory raised $18,003. How much did the elementary schools raise in total?
The elementary schools raised $40,254 altogether.
Round 402,756 to the nearest hundred thousand.
400,000
The relationship between the 5's in 52,570 is that the 5 in the ___________ is _____________ than the 5 in the _______.
The relationship between the 5's in 52,570 is that the 5 in the ten thousands place has a value that is one hundred times greater than the value of the 5 in the thousands place.
OR
The relationship between the 5's in 52,570 is that the 5 in the thousands place has a value that is one hundred times less than the value of the 5 in the ten thousands place.
You can arrange place value blocks in an _______ to represent a multiplication problem.
Array
The corn maze has a length of 12 feet and a width of 5 feet.
How big is the area of the corn maze?
60 square feet.
Ms. Satow is buying squid for the 4th grade dissection. There are 27 students in each class, and there are 5 classes doing the dissection. If squid are $3 each, how much money does she need to buy squid for all the 4th graders?
27 x 5 = 135
135 x 3 = 405
Ms. Satow will need $405 dollars to buy the squid.
Daisy is traveling back and forth to Dallas for a badminton tournament. Her flight is about 5 hours, and the distance one way is 1,435 miles. If Daisy has to fly round trip twice, about how many miles will she travel (when rounded to the nearest hundred)?
She will travel about 5,600 miles altogether.
If you have a 30 minute lunch period and 5 days of school. How many minutes do you have lunch in an entire week? How about in 5 weeks?
One week: 150 minutes
Five weeks: 750 minutes
2 x 3 x 5 is the ________ of the number 30.
Prime factorization