Rectangular garden:
length: 13 meters ; width: 10 meters
Area = 13 m x 10 m = 130 m²
Increase area to 208 m²
Find factors of 208 that is greater than 13.
208 / 13 = 16
Length: 13 + 3 = 16
Width: 10 + 3 = 13
The new rectangular garden will have a length of 16 meters and a width of 13 meters.
R=rita's age
m=mother's age
g=grandmother's age
mother is 4 times as old as rita
m=4r
grandmother is 2 times as old as mother
g=2m
sum is 104
r+m+g=104
subsitute 4r for m and 2m for g
r+4r+2m=104
subsitute 4r for m
r+4r+2(4r)=104
r+4r+8r=104
13r=104
divide both sides by 13
r=8
4r=m=32
8r=2m=g=64
rita is 8
mother is 32
grandmother is 64
First students should be taught to count numbers and make links between the numbers. Then they should learn to identify and create different representation of numbers and learn the concept of zero.
read and write numbers and to count, sort and order them. That way they can compare the size of two sets. And than students should be taught to add and subtract numbers. Adding can be learned by grouping numbers, while subtracting by moving apart given numbers.
48 000 gallons / 2 days = 24 000 gallons per day
24 000 gallons / 24 hours = 1 000 gallons per hour
<span>1 000 gallons / 60 minutes = 16.(6) gallons per minute</span>
