Friendly and Unfriendly Numbers

Tell me what a friendly number is.  Tell me what an unfriendly number is.  Explain how we round numbers to the nearest 10.  Why do you think this is an important skill to know?

12 Comments »

  1. Martha said

    A friendly number is a number that has a zero in the ones place value, like 10,20,30,40…… An unfriendly number is that it has a one or a two in the ones place value like 11,12,13,14,15….. I think this is an important skill to know because its interesting to be learning that because if you have a test then your not going to know what is a friendly number and a unfriendly number. Sometimes we play a game that its called Roller Coaster, and it’s fun to play that game because you need to have a number in your sticky note and you need to put it in the Roller Coaster were it goes.

  2. Eduardo said

    A friendly number is a number that ends with the number zero. An unfriendly number is a number that is 1,2,3,4 or 5. To round to the nearest ten you have to see wat number is it. If its the number 55 the nearest ten is 60. I think that this is important to me because I dont know this skill.

  3. Anel said

    Friendly numbers are all the numbers that haves a 0 on it like 10,20.30,40,50,60,70,80,90, and 100. And a unfriendly number doesnt haves a 0 on it. If you want to round numbers like if you are in the number 74 it is close to 70 and if you were the number 75 it will be close to 80 . I think that this is a important skill to know because when you take a test this will be in the test .

  4. Jeffrey said

    The friendly numbers are like ten and all of the other numbers that ends weth zero. Unfriendly numbers are like fortyone. And the numbers have to end in two, four, six all of the numbers. I round to the nearest ten becuase it is more easy. It is a skill to know because it is fun. And if I round it will be a friendly or a unfriendly numbers.

  5. Bryan said

    This is inporntet becouse is a frendli nomber.I well explein about rounding numbers becous we need to learn more about rounding numbers. A frendli number is about some numbers that are even. I think that is inportent becous it is even and a frendli nunber.

  6. Walter said

    A friendly number is somting that ends with a zero. Im goweng to tell you a friendly number with 3 degets – 700. A friendly number makes it easi to do math. I round by counting. It is inportent becus is about mony.

  7. Alex said

    The unfriendly numbers are 11 12 13 14 15 16 17 18 19. They are the unfriendly nombrs. The friendly numbrs are 10 20 30 40 50 60 70 80 90. Each of a zero is a friendly nomber. I think that it is importent becaose if we dont have friendly numbers evryting would not be fair.

  8. Adriana said

    The friendly numbers are the numbers that have a zerow in the ones place. The unfriendiy are the numbers that dont have a zerow. Like the twelve is an unfriendly number. I see the number twelve and round it to the nerest ten. I think that this is important becuse we need to learn more so you could pass third greid.

  9. Veronica said

    I think friendly numburs is when you pick a number and round to the nearest 10. I round to the nearest 10 in my hed becaus it is easier that way. This is inportant becaus I nned to learn houw to get to the nearest 10. I love to do that.

  10. Antonia said

    A friendly number is one thet has a 0 in the ones placet. The word unfriendly means thet it does not have a 0 in it. We round the numbers to the closest ten or hundred. I look at the tens and the hundreds. A think this is a important skill because a have to learn alot.

  11. Angeles said

    The friendly numbers are 10, 20, 30, and 40. A friendly number is one that it has a 0 in the ones pleis. We round the numbers like this, for examplo they tell me to round 75 to the nearest ten it is going to be 80. I think that this is a good skill becas its fun and I can learn more with my friends that way I think that my teacher is teaching me wath I am sopost to be learning.

  12. Perla said

    A friendly number is a number that ends with a 0 like 20. A unfriendly number is a number that dosen’t have a 0 in the end like 23. Rounding to the nerest 10 is like if I have 10 and someone has the number 7 so the 7 is closer to the 10 because it past the 5. We need to learn this because it is going to be in the TAKS test.

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