Order of Operations
12 + 6 × (9 − 5)
36
2.5 + 0.75 = ? Is 2.80 reasonable?
No, 3.25
Which is greater: 3/4 or 5/8?
3/4
Area = 24, one side = 6
what's the other side?
4
A class bought 8 boxes of pencils. Each box contains 12 pencils.
They also bought 5 packs of erasers. Each pack contains 4 erasers.
If each student gets 3 pencils and 1 eraser, how many students can the supplies serve?
20 Students
30 ÷ 5 × (4 + 2)
36
4.2 × 3
12.6
2/5 + 3/8 =
31/40
Why are all squares rectangles?
Because a square has 4 right angles and 4 sides
A bus can hold 45 students. A school has 3 classes with 38 students each going on a field trip.
How many buses are needed to take all the students?
3 buses
18 − 4 × (3 + 2) + 6
4
? × 100 = 6.3
0.063
4 × 3/5
12/5 or 2 2/5
What's the volume if the base=12 and the height=5?
60
Emma baked 3 batches of cookies. Each batch has 24 cookies. She gives 1/3 of her cookies to her neighbors and eats 1/4 of the remaining cookies.
How many cookies does she have left to share with her family?
36 cookies
45 ÷ [3 × (2 + 1)] + 7
12
5.6 ÷ 0.7
8
5 ÷ 1/4
20
A shape that has 2 pairs of parallel sides and no right angles?
Parallelogram
A school fundraiser sells lemonade for $2.50 per cup and cookies for $1.75 each.
They sold 48 cups of lemonade and 60 cookies.
What is the total money earned from both lemonade and cookies?
24 ÷ 6 × (5 − 2)
Student got: 1.33
What mistake?
Should multiply left to right → 12
3 items cost $4.75 each. Paid $20. How much change should they receive?
$5.75
2/3 + 3/4
17/12 or 1 5/12
Volume = 96, dimensions 4×3×h
What is the height?
A rectangular garden is 12 meters long and 7 meters wide. Each square meter can hold 4 tomato plants.
How many tomato plants can fit in the garden?
336 plants