Puzzles and problems
for 4th grade
Use the arithmetic of decimals to identify the largest or smallest of the given values
Compare fractions to decimals to percentages
This topic asks you to compare fractions, decimals and percentages and decide which of the 3 is the biggest or smallest in each particular ase.
For example, question 1 asks which is the biggest proportion, 40%, 1/2 or 0.51.
One way to think about this problem is to convert each of these proportions to the same form. Let's convert the other two proportions to decimals. 40% as a decimal is 40 divided by 100 is 0.4, and half as a decimal is 1 divided by 2 which is 0.5. So we can say that the largest proportion is represented by the decimal number 0.51
In another question you are asked which is the odd one out, 0.24, one quarter or 25%. Again, the easiest way to decide is to convert all the propoertions to the same form, and again, decimals are the simplest format to choose. So 25% is 25/100 which is 0.25. A quarter is 1 divided by 4 which is 0.25. So the odd one out is the decimal 0.24.
Below is a table showing the first 6 question answer pairs for the topic "Puzzles and problems" as used in the lessons for this topic. Our games and tests for the topic use these 6 items plus 10 additional question answer pairs.
The topic "Puzzles and problems" is in the category Percentages for 4th grade (ages 9 to 10).
Revise 'Puzzles and problems' with one of our games for 4th grade
Each of our math topics for elementary are made up of between 6 and 20 question and answer pairs (both the written form and a robot voice speaking those questions and answers). Each topic can be used with all the activities on the site.
Counting * Comparing numbers * Pattern * Place value * Addition * Subtraction * Add + Subtract * Multiplication * Division * Multiply + Divide * Fractions * Decimals * Percentages * Measurements * Shapes * Position + Direction * Statistics * Algebra *
