4.5
20 x 90 = 180020 times 90 equals 18 times 100 equals 1800.
20 goes into 90 4 times with a remainder of 10.
18
1 km =1000 m 1.8 km =1800 m ratio is : 90 :1800 1 :20 20 times does 90 meters go into 1.8 kilometers
90
3*30=90
2.5*36 = 90
It equals: 7,200
90 x 90 = 8,100
20 = 400
15 times 90 equals 1350.
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