Operations
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Jenna collected 3,428 seashells. Her friend gave her 2,795 more.
How many seashells does Jenna have now?
3,428 + 2,795 = 6,223 seashells
Round 3,259 to the nearest ten and nearest hundred.
Nearest ten: 3,260
Nearest hundred: 3,300
Are the fractions 1/2 and 2/4 equivalent?
Explain your answer using a model or math reasoning.
Yes. 2/4 = 1/2 because they represent the same part of a whole.
(2 ÷ 4 = 0.5, 1 ÷ 2 = 0.5)
A jug contains 3 quarts of juice. How many cups is that?
(1 quart = 4 cups)
3 × 4 = 12 cups
Which of the following angles is a right angle?
A) 90°
B) 45°
C) 120°
D) 180°
A) 90°
There were 9,208 people at a concert. After intermission, 3,175 people left.
How many people stayed?
9,208 – 3,175 = 6,033 people
Which number is greater:
9,845 or 9,854?
9,854 is greater (compare tens digit: 4 < 5)
Add: 2/6 + 3/6
What is the sum? Simplify if needed.
2/6 + 3/6 = 5/6
A ribbon is 1.5 meters long. How many centimeters is that?
(1 meter = 100 centimeters)
1.5 × 100 = 150 centimeters
A quadrilateral has two pairs of parallel sides and four right angles.
What is the name of this shape?
Answer: Rectangle
Tom has 1,250 marbles. He bought 850 more and then gave 300 to his friend.
How many marbles does Tom have now?
1,250 + 850 = 2,100
2,100 – 300 = 1,800 marbles
Write the number 8,243 in:
Word form:
Expanded form:
Word form: Eight thousand, two hundred forty-three
Expanded form: 8,000 + 200 + 40 + 3
Subtract: 5/8 – 2/8
5/8 – 2/8 = 3/8
A race started at 2:15 PM and ended at 3:40 PM.
How long did the race last?
1 hour and 25 minutes
Which shape does not have a line of symmetry?
A) Circle
B) Square
C) Trapezoid (non-isosceles)
D) Equilateral Triangle
C) Trapezoid
26 × 13
26 × 13 = 338
A school’s library has 14,387 books.
Principal Rivera says there are “about 14,000 books.”
Is that an accurate estimate? Explain using rounding.
Round 14,387 to the nearest thousand: 14,000
✅ Yes, it’s a reasonable estimate.
If you eat 1/5 of a pizza each day, how much pizza will you eat in 4 days?
4 × 1/5 = 4/5 of a pizza
A garden is 6 meters long and 4 meters wide.
What is the area of the garden?
Area = 6 × 4 = 24 square meters
Draw a line of symmetry through a rectangle.
(If this is on paper, ask students to fold or draw it.)
A rectangle has 2 lines of symmetry:
One vertical down the middle
One horizontal across the middle
A factory packed 1,236 toys into boxes. Each box holds 6 toys.
How many boxes were used?
If 4 boxes were damaged, how many good boxes remain?
1,236 ÷ 6 = 206 boxes
206 – 4 = 202 good boxes
In the number 4,400, the digit 4 appears twice.
What is the value of each 4, and how is the 4 in the thousands place related to the 4 in the hundreds place?
Thousands place: 4,000
Hundreds place: 400
The 4 in the thousands place is 10 times greater than the 4 in the hundreds place.
Which is greater: 0.7 or 3/4?
(Hint: convert 3/4 to a decimal.)
3/4 = 0.75 → so 3/4 is greater
Students measured the length of pencils and recorded the following measurements (in inches):
6, 6, 6½, 7, 6½, 7, 7½, 6
How many pencils were longer than 6 inches?
6½ (2), 7 (2), 7½ (1) → 5 pencils
An angle measures 120°, and part of it measures 85°.
What is the measure of the missing angle?
120 – 85 = 35°