Tổng của 2 số lẻ là 84 .tìm 2 số đó. Biết giữa chúng cách nhau 2 số lẻ

2 câu trả lời

Giua 4 so nho lien tiep co 3 khoang cach tuong ung voi 2 don vi

Hieu so le la :

3.2=6

so le nho la :

(84-6):2=39

so le lon la :

39+6=45

Hai số lẻ hơn kém nhau một khoảng là $2$ đơn vị

Giữa hai số lẻ cần tìm cách nhau 2 số lẻ do đó chúng cách nhau 3 khoảng như vậy

Hiệu hai số lẻ cần tìm là:

             $2\times3=6$ (đơn vị)

Số lẻ thứ nhất là:

             $(84-6):2=39$

Số lẻ thứ hai là:

             $84-39=45$

                                Đáp số: $39$ và $45$

Câu hỏi trong lớp Xem thêm

This is John . He’s a teacher. He’s old and a little fat. He has short black hair. He works at the school. He teaches English. Every day he gets up at half past six in the morning. He takes a shower and puts on a shirt and tie. Then he eats breakfast at seven o’clock. At half past seven, he rides his motorcycle to school. Tony starts work at eight o’clock. He cleans the classroom. Then, he talks with his students’ parents. He starts teaching at nine o’clock. At twelve o’clock, he eats lunch. He teaches again in the afternoon. He goes home at half past four. In the evening, he feeds his goldfish and he watches TV. He eats dinner at half past six. Then he corrects students’ homework. At ten o’clock, he goes to bed. 1. What’s his name? …………………………………………………………………….. 2. What does he look like ? …………………………………………………………………….. 3. What time does he get up ? …………………………………………………………………….. 4. What time does he eat breakfast ? …………………………………………………………………….. 5. What time does he go home ? …………………………………………………………………….. 6. What time does he eat dinner? …………………………………………………………………….. 7. What time does he go to bed? …………………………………………………………………….. 8. What does he do in the evening ? ……………………………………………………………………..

2 lượt xem
1 đáp án
3 giờ trước