Fix the mistake
Someone says:
12 ÷ 3 = 9 because 3 + 9 = 12
What is wrong?
Answer: They used addition instead of thinking about equal groups
There are 3 baskets with 6 apples in each.
How many apples total?
18 apples
1/2 or 1/4
1/2
What is a shape that has 4 sides called?
A. Circle
B. Polygon
C. Quadrilateral
C. Quadrilateral
What is 452 rounded to the nearest hundred?
A student says:
16 ÷ 4 = 12 because 4 + 12 = 16
Explain the mistake and fix it.
Answer: Should be 4 (equal groups)
Team A collected 140 cans.
Team B collected 160 cans.
30 more were donated.
How many cans in total?
330 cans
Which is greater: 3/4 or 2/3? Explain.
3/4
A rectangle has a length of 5 units and a width of 3 units.
What is the area?
Explain how you know
15 suare units
What number comes next?
5, 10, 15, 20, ___
25
Someone solved:
20 ÷ 5 = 15
Explain what went wrong AND give the correct answer.
They added instead of dividing so the answer is 4
There are 4 boxes with 8 markers each.
12 more markers are added.
How many markers in total?
44 markers
Which fraction is equivalent to 2/4?
A. 3/4
B. 1/2
C. 2/3
B. 1/2
Is a rectangle a quadrilateral? Explain.
Yes, it has 4 sides
What is 781 rounded to the nearest ten?
780