Numbers
What is the greates common factors of 24 and 48?
24
Use associative properties to solve 25×4×70
25×4×70
=(25×4)×70
=100×70
=7000
What is the degree of 1/8 circle?
45 degree
2000000 立方公分(cm3) = __ 立方公尺 (m3)
_2_ 立方公尺 (m3)
How to read 5％ in English and Chinese?
five percent and 百分之五
2880÷(12×6) = ?
40
Use commutative properties to solve 125×974×8
125×974×8
=125×8×974
=1000×974
=974000
What is the area of a Parallelogram with width 10 cm and height 12 cm?
120 cm2
Happy Community will build a cube water tower. Each side of the water tower is 2 meters long. What is the volume of this water tower in cubic meters?
2 × 2 × 2 ＝ 8 m3
Convert 5％ to ratio.
5/100 or 1/20
25＋147＋75＋53 = ?
300
The school bought 4 big boxes of chalk. Inside each big box are 42 small boxes. Inside each small box are 25 pieces of chalk. How many pieces of chalk are there altogether?
4×42×25
=(4×25)×42
=100×42
=4200
Would it be able to make a triangle with three length of 3, 3, 5?
No
What will happen if a piece of stone is put into a container completely filled with water? What’s the connection between stone and the overflowing water?
The volume of overflowing water = the volume of the stone
Convert 80 % to decimal.
0.8
A bottle of juice is 5/8 liters, how to express it in decimal?
5/8 = 5÷8＝0.625L
May has 200 dollars now, so how much did she have in her wallet? List the equations according to the question, and then calculate to find out how much is x?
x＋74＝200
x ＝200－74 ＝126
How many vertices does a Pentagonal pyramid?
6
8 立方公尺m³
＝ ( ) 公秉kiloliter
＝ ( ) 公升liter
8 立方公尺m³
＝ ( 8 ) 公秉kiloliter
＝ ( 8000 ) 公升liter
There are literature, art, science books, magazines and others in the library. The percentages for each kind of books are 32%, 0.9%, 6%, 20% and 41.1%. How to express these percentages in decimals ?
Arts 0.9 ％ = 0.009
Science 6 ％ = 0.06
Magazines 20 ％ = 0.2
Others 41.1％ =0.441
10 ÷ 2/5 = ?
25
Rei had x dollars, she spent 135 dollars to bought a CD, and had 75 left. How many dollars did she have before?
x－135＝75
x＝75＋135 ＝210 dollars
How many symmetrical lines in regular Octagon?
8
What is the surface area of cube with length of 2 cm?
2x2x6 = 24 cm2
Dan can get 15 % off discount to get the shoes $ 2400 with VIP card, how much does he need to pay?
2400×95％＝ 2280 dollars