Question

Preciso dos cálculos me ajudem por favor (abram a foto)

Answer 1

4/4 - 3/4 = 1/4  falta
1/4 de 240 = 240/4 = 60 m falta correr***

2
x - 3 = 7
x = 7 + 3 = 10***

x + 4 = 10
x = 10 - 4
x = 6 ***

x + 101 = 300
x = 300 - 101
x = 199 ***

2x = 30
x  = 30/2 = 15 ****

3
340 * 2120 reais = 720.800 reais

4
1/3 de 2.700 reais = 2.700/3 = 900 reais **** aluguel

5
0.8 = 8/10 = 4/5
0.25 = 25/100= 1/4
2,64 = 264/100 =  116/25
0.002 = 2/1000 = 1/500
0.245 = 245/1000 = 49/200
0.18 = 18/100 = 9/50

6

1/3 + 2/5 =
mmc = 15
( 5 + 6 )/15 = 11/15 ***

7/2 + 2/3
mmc = 6
( 21 + 4 )/6 = 25/6 ***

9/10 - 4/5 =
mmc = 10
( 9 - 8 )/10 = 1/10 ***

4/5 - 1/2
mmc = 10
( 8 - 5 )/10  = 3/10 ***