two

fifty

sixteen

21

1. Who is going to clean the floor?-Henry is.

2. Ten plus nine makes nineteen.

3. Her new friends are older than her old friends.

1 . who

2. ten

3. than

1. Who is going to clean the floor?-Henry is.

2. Ten plus nine makes nineteen.

3. Her new friends are older than her old friends.

D

D nhé

D. Nineteen ninety-nine pounds

I>USE THE RIGHT FORM  OF THE VERB

1.Two times two (make)makes four.

2.Two 2’s (make )makes four.

3.Two plus two (be)is four.

4.How many (be)is six and five?

5.Nine from fourteen (be)is five.

6.Twenty years (be)is not a long period of time in human history.

7.Five dimes (make) makes fifty cents.

8.Five dollars (be)is a small sum.

9.“ The three Musketeers” (be)was written by Alexandre Dumas.

10.You don’t have to say much , a word or two (be)are sufficient.

11.These (be)is one or two things I’d like to talk over with you.

12.The number of new books in our library (be)is ever growing.

13.A number of new books in our library (be)are displayed at the book show.

14.Our only guide ( be) are stars.

15.There (be)is a lot of traffic on this road.

900 và 99.Phép cộng hay trừ vậy?

900+99=999

900-99=801

900 và 99 

900 và 99 nhé bạn

Ta có :

\(\frac{1}{x\left(x+1\right)}+\frac{1}{\left(x+1\right)\left(x+2\right)}+....+\frac{1}{\left(x+5\right)\left(x+6\right)}\)

\(=\frac{1}{x}-\frac{1}{x+1}+\frac{1}{x+1}-\frac{1}{x+2}+....+\frac{1}{x+5}-\frac{1}{x+6}\)

\(=\frac{1}{x}-\frac{1}{x+6}\)

\(=\frac{6}{x\left(x+6\right)}\)

câu hỏi mk vẫn chưa hỉu lắm tính chín mươi ngàn 99-50.000 ba mươi sáu bằng

Ai giúp được mình bài này không ?!!@$%&&*(() Mình cảm ơn nhiều ^^

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