Tính:
2 , 3 × − 6 , 4 + 3 , 6 × − 2 , 3
Tính:
5 +1 = 4 + 2 = 3 + 3 =
6 - 5 = 6 - 2 = 6 - 3 =
6 - 1 = 6 - 4 = 6 - 6 =
5 +1 = 6 4 + 2 = 6 3 + 3 = 6
6 - 5 = 1 6 - 2 = 4 6 - 3 = 3
6 - 1 = 5 6 - 4 = 2 6 - 6 = 0
5 +1 = 6 4 + 2 = 6 3 + 3 =6
6 - 5 =1 6 - 2 =4 6 - 3 =2
6 - 1 = 5 6 - 4 = 2 6 - 6 =0
Tính:
6 - 4 -2 = 6 - 2 - 2 = 6 - 3 - 3 =
6 - 2 -4 = 6 - 1 - 2 = 6 - 6 =
6 - 4 - 2 = 0 6 - 2 - 2 = 2 6 - 3 - 3 = 0
6 - 2 - 4 = 0 6 - 1 - 2 = 3 6 - 6 = 0
6 - 4 -2 = 0 6 - 2 - 2 = 2 6 - 3 - 3 =0
6 - 2 -4 =0 6 - 1 - 2 = 3 6 - 6 =0 nha em, chúc em năm mới học giỏi và cố gắng lên lớp 2 giống anh nha!
Tính:
4 + 5 = 6 + 3 = 1 + 8 =
4 + 1 + 4 = 6 + 1 + 2 = 1 + 2 + 6 =
4 + 2 + 3 = 6 + 3 + 0 = 1 + 5 + 3 =
4 + 5 = 9 6 + 3 = 9 1 + 8 = 9
4 + 1 + 4 = 9 6 + 1 + 2 = 9 1 + 2 + 6 = 9
4 + 2 + 3 = 9 6 + 3 + 0 = 9 1 + 5 + 3 = 9
4+5 =9 . 6+3=9 1+8=9 4+1+4=9 6+1+2=10 1+2+6=9 4+2+3=9 6+3+0=9 1+5+3=9 Đúng thì cho chứ đừng cho sai nha
Tính?
6 – 5 – 1 = … | 6 – 4 – 2 = … | 6 – 3 – 3 = … |
6 – 1 – 5 = … | 6 – 2 – 4 = … | 6 – 6 = … |
Lời giải chi tiết:
6 – 5 – 1 = 0 | 6 – 4 – 2 = 0 | 6 – 3 – 3 = 0 |
6 – 1 – 5 = 0 | 6 – 2 – 4 = 0 | 6 – 6 = 0 |
Tính:
3 + 4 – 5 = … | 8 – 6 + 3 = … | 10 – 3 – 2 = … |
5 + 1 + 2 = … | 4 + 4 – 6 = … | 5 + 5 – 7 = … |
6 – 4 + 8 = … | 9 – 6 + 5 = … | 4 + 3 – 3 = … |
Lời giải chi tiết:
3 + 4 – 5 = 2 | 8 – 6 + 3 = 5 | 10 – 3 – 2 = 5 |
5 + 1 + 2 = 8 | 4 + 4 – 6 = 2 | 5 + 5 – 7 = 3 |
6 – 4 + 8 = 10 | 9 – 6 + 5 = 8 | 4 + 3 – 3 = 4 |
2,8,10,5,2,8,5,3,4.
Tính
b)
4 + 5 - 7 = 6 - 4 + 8 = 10 - 9 + 6 = 9 - 4 - 3 =
1 + 2 + 6 = 3 + 2 + 4 = 8 - 2 + 4 = 8 - 4 + 3 =
3 - 2 + 9 = 7 - 5 + 3 = 3 + 5 - 6 = 2 + 5 - 4 =
b) Tính theo thứ tự từ trái sang phải.
4 + 5 - 7 = 2 6 - 4 + 8 = 10 10 - 9 + 6 = 7 9 - 4 - 3 = 2
1 + 2 + 6 = 9 3 + 2 + 4 = 9 8 - 2 + 4 = 10 8 - 4 + 3 = 7
3 - 2 + 9 = 10 7 - 5 + 3 = 5 3 + 5 - 6 = 2 2 + 5 - 4 = 3
Tính nhanh
10+2+4+6+8+20
1/3 + 1/6 + 4/3 + 2/6 + 2/3 + 5/6
(10+20)+(2+8)+(4+6)=30+10+10
=50
1/3+1/6+4/3+2/6+2/3+5/6
=(1/3+4/3+2/3)+(1/6+2/6+5/6)
=7/3+8/6=7/3+4/3=11/3
tính A= 1/2 - 2/3 + 3/4 - 4/5 + 5/6 - 6/7 - 5/6 + 4/5 - 3/4 + 2/3 - 2/3 - 1/2
#)Giải :
\(A=\frac{1}{2}-\frac{2}{3}+\frac{3}{4}-\frac{4}{5}+\frac{5}{6}-\frac{6}{7}-\frac{5}{6}+\frac{4}{5}-\frac{3}{4}+\frac{2}{3}-\frac{1}{2}\)
\(A=\left(\frac{1}{2}-\frac{1}{2}\right)+\left(-\frac{2}{3}+\frac{2}{3}\right)+\left(\frac{3}{4}-\frac{3}{4}\right)+\left(-\frac{4}{5}+\frac{4}{5}\right)+\left(\frac{5}{6}-\frac{5}{6}\right)-\frac{6}{7}\)
\(A=0+0+0+0+0-\frac{6}{7}\)
\(A=-\frac{6}{7}\)
Tính :
1/3 + 3/4 + 1/2 =
6/8 + 2/4 + 6/24 =
1/2 + 1/3 + 5/6 =
3/5 + 3/2 + 2 =
\(\dfrac{1}{3}+\dfrac{3}{4}+\dfrac{1}{2}=\dfrac{4}{12}+\dfrac{9}{12}+\dfrac{6}{12}=\dfrac{19}{12}\)
\(\dfrac{6}{8}+\dfrac{2}{4}+\dfrac{6}{24}=\dfrac{3}{4}+\dfrac{2}{4}+\dfrac{1}{4}=\dfrac{6}{4}=\dfrac{3}{2}\)
\(\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{5}{6}=\dfrac{3}{6}+\dfrac{2}{6}+\dfrac{5}{6}=\dfrac{10}{6}=\dfrac{5}{3}\)
\(\dfrac{3}{5}+\dfrac{3}{2}+2=\dfrac{6}{10}+\dfrac{15}{10}+\dfrac{20}{10}=\dfrac{41}{10}\)
\(\dfrac{1}{3}+\dfrac{3}{4}+\dfrac{1}{2}=\dfrac{13}{12}+\dfrac{1}{2}=\dfrac{19}{12}\\ \dfrac{6}{8}+\dfrac{2}{4}+\dfrac{6}{24}=\dfrac{5}{4}+\dfrac{6}{24}=\dfrac{3}{2}\\ \dfrac{1}{2}+\dfrac{1}{3}+\dfrac{5}{6}=\dfrac{5}{6}+\dfrac{5}{6}=\dfrac{10}{6}\\ \dfrac{3}{5}+\dfrac{3}{2}+2=\dfrac{21}{10}+\dfrac{20}{10}=\dfrac{41}{10}\)
`1/3 + 3/4 +1/2`
`= 4/12 + 9/12 + 6/12`
`= (4+9+6)/12`
`= 19/12`
__
`6/8 + 2/4 + 6/24`
`= 3/4 + 2/4 + 1/4`
`=(3+2+1)/4`
`= 6/4= 3/2`
__
`1/2 + 1/3 + 5/6`
`= 3/6 + 2/6 + 5/6`
`=(3+2+5)/6`
`=10/6`
`=5/3`
__
`3/5 + 3/2+2`
`= 6/10 + 15/10 + 20/10`
`=(6+15+20)/10`
`= 41/10`
Tính:
4 + 3 = … | 1 + 9 = … | 6 + 2 = … | 3 + 3 = … |
7 – 4 = … | 10 – 1 = … | 8 – 6 = … | 6 – 3 = … |
7 – 3 = … | 10 – 9 = … | 8 – 2 = … | 6 – 0 = … |
Lời giải chi tiết:
4 + 3 = 7 | 1 + 9 = 10 | 6 + 2 = 8 | 3 + 3 = 6 |
7 – 4 = 3 | 10 – 1 = 9 | 8 – 6 = 2 | 6 – 3 = 3 |
7 – 3 = 4 | 10 – 9 = 1 | 8 – 2 = 6 | 6 – 0 = 6 |