Question

22 Magruder Road Fort Hancock, NJ 07732 732-872-1300 njmsc.org

HOW MUCH OCEAN?
Predict what percentage of the earth's surface is covered with water.
% (0%-100%)
To find out how close your prediction is, count the number of squares of land and water down each column. Add the numbers across in the
land row, divide by the total number of squares in the whole map, and then multiply by 100. Do the same for the water row.
Land
Water
Total number of squares in map:
(squares in a column)
x (squares in a row)
pers
(total squares).
TO
Land
Water
To
22
P
Ratio
(of sq/total # of sq)
☆
Decimal
Totals
Percent
(decimal x 100)

Answer 1

69
Explanation:
Square root of 1300= 36
(37)²>1300>(36)²
Therefore , the requirement no. to be added to get a perfect square
=(37)²=1369
= 1369- 1300=69
The least no. Of sapling he needs for this = 69