Early math review
Counting objects 2
Learn to count dogs, mice, and cookies in random patterns.
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- why we do not start counting object from 0 ? like number grid in previous lesson(10 votes)
- Because if you have 0 apples then you still have no apples at all. So if you start counting from 0 it wouldn't make sense.(18 votes)
- at0:12why does he start with the top dog?(5 votes)
- Partially so he can remember which one he started on so he doesn't accidentally count one twice,
but also because in america, we read from left to right, top to bottom.(3 votes)
- what number comes after fourve?(2 votes)
- are you saying four ? if you are taking about what number comes after four , that is five . --> 5(5 votes)
- is there something below zero(2 votes)
- Anil is right. Negative numbers represent subtraction. So if you had 2 apples, and you added "-1 apples", you would have 1 apple. You will learn about this later.(4 votes)
- Do not make it difficult.do you hear me!(2 votes)
- Of course you can't hear anyone on a computer! What are you thinking?!(3 votes)
- what is the square root of 5 to the power of 2(2 votes)
- If I was count these how would I know how many there are?(2 votes)
- Using addition, the first would be number 1, the second number 2, so on so on.(4 votes)
- Basically, in these type of problems, Multiplying the rows and columns is a SHORTCUT than counting 1 BY 1; if any column or row isn't PERFECT then only we've to perform ADDITION or SUBTRACTION (please comment to correct me(3 votes)
- Sorry if I don't answer your question correctly or I'm too confusing; I may have interpreted your question wrong.
Yes, multiplying is a shortcut. I don't really get your second question on a column or row not being perfect, but if what you mean is this, then I can try to answer it:
+ + + + +
+ + + + +
+ + +
Here, you can still do " 3 x 5 ", and yes, all you have to do is to subtract " 2 ". Sorry if I didn't answer your question correctly. Anyhow, good luck!(2 votes)
- When we add, will it always be right?(2 votes)
- No because sometimes you can do simple mistakes and mess the question up.(4 votes)
- why is there no 100,s(1 vote)
- You will learn about 100's later in school. 100 is the same as 10 tens.
Have a blessed, wonderful day!(2 votes)
- [Voiceover] How many dogs do you see? And I have the dogs down here, we just need to count them. So, if I'm starting with this dog, and I wanna make sure that I don't count him again, so I wanna remember, I'm starting with this top dog. One, two, three, four, five, six, seven, eight. I see eight dogs. You might be tempted to go, nine. But I already counted this dog. So there's only eight dogs. So I see eight dogs. So let's check our answer. Got it right. How many mice do you see? Same thing, I like to start with the top mouse, but we have to remember, if I'm gonna start counting with the top mouse, I don't wanna keep counting the top mouse. So one, two, three, four, five, six, seven. Now, you might be tempted to go eight, but we already counted this top mouse. So there's only seven mice here. Seven mice. You gotta be careful not to keep going in circles and counting the mice over and over and over again. You only wanna count each of the mice once. Let's do another one. This is too much fun. How many cookies do you see? All right, they're all jumbled up here, and we just have to be careful not to count the cookie twice. So let's see, one, two, three, four, five, six, seven, eight, nine. There are nine cookies. I see nine cookies. How many mice are there? Okay, now, here there are a lot of mice. So there's one, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 13, 14, 15, 16, 17, 18 19 mice. There are 19 mice there. That's a lot of mice.