Number puzzles: product, sum and difference
Sum, difference and product: solving puzzles by smart trying. Read one part at a time and tap “I know this”. Then test yourself in the quiz.
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Sum, difference and product
| Word | Means | Example |
|---|---|---|
| sum | add | the sum of 6 and 4 = 10 |
| difference | subtract | difference between 9 and 4 = 5 |
| product | multiply | the product of 6 and 4 = 24 |
Puzzle: two numbers have a sum of 10 and a product of 24. Try pairs that make 10: 6 + 4 → 6 × 4 = 24. The numbers are 6 and 4.
Remember this and test yourself
- Sum = add; difference = subtract; product = multiply.
- List the pairs that fit the first clue.
- Test each pair with the second clue.
Write these points in your book. Read them again the night before the test.
Sum together, difference apart, product times.
Important words
First say the answer yourself, then turn the card over.
Match column A to column B
Tap a word in column A, then its meaning in column B. You can also start in column B.
True or false?
Read the question and the answer. Is the answer right? Tap True or False.
Now the real quiz!
The quiz has many more questions on this topic. Every question shows straight away whether you are right and explains why.
Take the quiz: Number puzzles: product, sum and difference- Let your child work the examples on paper and explain them to you.
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Follows CAPS for Grade 4 Mathematics. Always check your teacher’s notes and textbook too.