Area or Perimeter?
A rectangle is 6 units long and 2 units wide. What is its area?
12 square units. 6 × 2 = 12.
Is 11 prime or composite?
Prime. Its only factors are 1 and 11.
Which fraction is greater: 4/9 or 7/9?
7/9
3/10 + 4/10 = ?
7/10.
In 3 2/7, what is the whole-number part and what is the fraction part?
Whole-number part: 3. Fraction part: 2/7.
A square has sides that are each 7 feet long. What is its perimeter?
28 feet. 7 + 7 + 7 + 7 = 28.
List all the factors of 18.
1, 2, 3, 6, 9, 18.
Fill in the missing number: 2/3 = ?/12.
8, because 2/3 = 8/12.
11/12 − 3/12 = ? Give your answer in simplest form.
8/12 = 2/3.
Fill in the missing numerator: 7/8 = 3/8 + ?/8.
4, because 7/8 = 3/8 + 4/8.
A rectangle is 9 inches long and 4 inches wide. Find its area AND perimeter.
Area: 36 square inches. Perimeter: 26 inches.
List the first five positive multiples of 8. Start with 8.
8, 16, 24, 32, 40.
Compare using >, <, or =: 3/5 ___ 2/3.
3/5 < 2/3, because 9/15 < 10/15.
1/3 + 1/6 = ? Give your answer in simplest form.
2/6 + 1/6 = 3/6 = 1/2.
Change 14/5 into a mixed number.
2 4/5, because 14/5 = 5/5 + 5/5 + 4/5.
A rectangular garden has an area of 42 square feet. It is 7 feet long. How wide is it?
6 feet. 42 ÷ 7 = 6.
I am greater than 30 and less than 40. I am a multiple of both 5 and 7. What number am I?
35. 5 × 7 = 35.
Put these fractions in order from least to greatest: 3/4, 1/3, 5/6.
1/3, 3/4, 5/6. In twelfths: 4/12, 9/12, 10/12.
7/8 − 1/3 = ?
21/24 − 8/24 = 13/24.
Change 3 3/4 into an improper fraction.
15/4. Three wholes equal 12/4; 12/4 + 3/4 = 15/4.
A rectangle has a perimeter of 30 inches. It is 9 inches long. Find its width AND area.
Width: 6 inches. Area: 54 square inches. Half the perimeter is 15; 15 − 9 = 6; 9 × 6 = 54.
A student says, “Every even number is composite.” Which number proves the student is wrong? Explain.
2. It is even, but its only factors are 1 and 2, so it is prime.
A number line has 6 equal intervals between each whole number. A point is 11 intervals to the right of 0. Name the point as an improper fraction AND a mixed number.
11/6 = 1 5/6. Six intervals make one whole, with five intervals left.
A pitcher has 5/6 liter of juice. You pour out 1/4 liter, then another 1/3 liter. How much juice is left?
1/4 liter. 10/12 − 3/12 − 4/12 = 3/12 = 1/4.
Write two different addition equations that equal 3 2/5. Each equation must have at least three addends.
Examples: 1 + 2 + 2/5 = 3 2/5 and 5/5 + 6/5 + 6/5 = 3 2/5. Accept other correct decompositions. But you must explain your answer