Addition/
Subtraction
Subtraction
486 + 275 =
761
When two lines cross and make 90 degree angles, those lines are...
Perpendicular
List all the factors of 21.
Is 21 prime or composite? Explain why.
1 x 21 = 21 and 3 x 7 = 21
Composite : The number 21 has more factors than 1 x 21.
Create a list of 5 numbers that starts at 4 and increases by 3 each time.
4, 7, 10, 13, 16, 19
.3
.30
.300
There are _____ inches in one foot. How many inches are in 9 feet?
There are 12 inches in one foot.
There are 108 inches in 9 feet (9 x 12 = 108)
List the first 5 multiples of 9.
9, 18, 27, 36, 45
If I want a new fence around my yard, which measurement am I looking for?
Perimeter.
The 4th graders were playing soccer in the field. They set up their boundaries with a length of 36 yards and a width of 22 yards. What was the perimeter of the soccer field?
The perimeter of the soccer field was 116 yards.
36 + 36 + 22 + 22 = 116 yards
2,416 x 5 =
12,080
What do you call a quadrilateral that has 2 sets of parallel lines, all right angles, and 2 sets of congruent sides?
Jesus had 8,647 crayons at home. He wanted to split his crayons equally into 4 boxes. How many crayons would be in each box?
8,647 divided by 4 = 2,161 r3
Jesus could fit 3,161 crayons into each box.
4,000,000 + 100,000 + 7,000 + 90 + 6
The length of Nathalia's bedroom is 12 feet and the width is 10 feet. What is the area and perimeter of her room?
Area = 120 square feet
Perimeter = 44 feet
37 x 19 =
703