Facts
When adding and subtracting decimals, it's important to line up the __________ in both numbers.
Decimal point or place value
What are the 4 Earth's Systems?
Atmosphere
Geosphere
Biosphere
Hydrosphere
Add these decimals. 21.74 + 8.27
30.01
Multiply these decimals. 0.03 x 100
3
Subtract these decimals.
3.53 - 2
1.53
4.6 / 2
2.3
the number you are dividing into is called ____________
Dividend
What do we call precipitation that falls in ice crystal form?
Snow
Add these decimals.
17 + 9.54
26.54
Multiply these decimals. 0.7 x 2.6
1.82
Subtract these decimals.
2.15 - 1.05
1.1
0.98 / 1
0.98
the number you are dividing by is called ______________
Divisor
What are the layers of the Earth? (From Top to Bottom)
Crust
Mantle
Outer Core
Inner Core
Add these decimals. 6.125 + 18
24.125
Multiply these decimals.
0.23 x 7.5
1.725
Subtract these decimals.
10.71 - 0.7
10.01
4 divided by 50
.08
**Bonus**
1000 points
1000 points
How many degrees does a circle have?
360 degrees
Add these decimals. 4.67 + 29.1
33.77
Multiply these decimals. 2.5 x 3.04
7.6
Subtract these decimals.
1.72 - 0.8
0.92
49.6 / 6.2
8
How to divide two decimals.
Write in long division form
Make the divisor a whole number by moving the decimal point to the ______
Move decimal point the same number of places in dividend
Complete long division
Carry up decimal point to final answer
Right
What is the percentage of water on Earth?
97%
Add these decimals.
5.2 + 3.11
8.31
Multiply these decimals. 4.04 x 5.3
21.412
Subtract these decimals.
2.54 - 1.82
0.72
Divide 7.14 by 0.7
10.2