Divisibility rules
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The document discusses divisibility rules that can help with division and fair sharing. It provides simple rules to determine if a number is divisible by 1, 2, 5, 10, or other numbers without needing to do extensive calculation. Knowing these rules makes solving problems involving division easier and helps on math tests. The most important rules are that all even numbers are divisible by 2 and all numbers ending in 0 are divisible by 10.
Divisibility rules
- 1. Divisibility Rules Simple rules to use to help with division and fair sharing! CFU: What are we going to do today? What are we going to (skill)?
- 2. Bet you already knew this! All even numbers are divisible by two All numbers ending with zero are divisible by 10. CFU (include connection to LO)
- 3. Vocabulary Divisible by: if one counting number can be divided by a second counting number with a remainder of 0, then the first number is divisible by the second number. Example: 28 is divisible by 7 because 28 divided by 7 is 4, with no remainder. Divisibility test: These rules let you test if one number is divisible by another, without having to do too much calculation!
- 4. Divisibility Rules divisible by 1: all numbers divisible by 2: all even numbers (end with 0, 2, 4, 6, or 8) Divisible by 3: if the sum of its digits is divisible by 3 Divisible by 5: if it ends with 0 or 5 Divisible by 6: if it is divisible by both 2 and 3 Divisible by 9: if the sum is divisible by 9 Divisible by 10: if it ends with 0
- 5. Importance These rules can make your life easier!! They can help you figure out test questions!! CFU: Does anyone else have any other reason as to why it is important? Which reason is most important to you? Why? You can give me my reason or your
- 6. Skill Development (steps or processes) CFU (strategic)
- 7. Guided Practice (steps or processes)