second grade

problem 16: How much of Earth’s water can we use? (percentages)

third grade

problem 16: How much of Earth’s water can we use? (percentages)

fourth grade

problem 16: How much of Earth’s water can we use? (percentages, fractions & decimals)

problem 17: Which continent has the most water? (percentages, fractions & decimals)

fifth grade

problem 16: How much of Earth’s water can we use? (percentages, fractions & decimals)

problem 17: Which continent has the most water? (percentages, fractions & decimals)