Fifth grade math! ! ! !

1. 1, 1.2 minutes, 1.4 kilometers, 3.025 tons, 0. 1.6 decimeter.

2, 6 and 65438+3/00

3. (5 out of 9)+(4 out of 9)

2. 1，x+ 1=40，3 1 x= 40，3 1 - 16， 1 x= 40，3 1 x2。

X = 62-80, 5 x = 80, 57.

2.2/3-x = 1x = 1x = 2/3- 1x = 2/3- 10- 1x 3。

X = 20 20-3 x = 65438+30 07.

3.x+( 1-6 1)= 65438+7 x+02( 1x 3-6 1x 2)= 65438+7 x 02。

X+(3+02-12 in 65438) = 7+02-1=12 in 7.

X = 65438+6/02 x = 1/2

4.x+9 1+ 18 7 = 17 x = 18 17- 18 7-65438 1 x = 18。

5-9 with x = 914 with x = 9.

Three. 0x2/2 of 1, 3/4+6-21= 3/4+6/31x21x6.

= 9+02 of 65438+2+02 of 65438-6+02 of 65438 = 5+02 of 65438

2, 2/3+(5/6-65438+5/08) = 2/3+(3/6-65438+5/08) = 2/3+(18-65438+5/08) = 3. 1810 =181810 =1822 =1and 2/9.

Fourth, it is planned to save X tons of coal in the later period. The solutions are: 1+28,11+x = 8,77, 1x4,1+x = 7,28,4+28,/kloc. x = 7-28 of 8 15x = 7-7 of 8 15 x2 of 56 49-56 30 x = 56 19。