Exercise Using Numbers And Percentages Correctly

Using the rules for writing numbers and expressing percentages, correct the following sentences:

SENTENCES CONTAINING ERRONEOUS CORRECTIONS NUMBERS

15 patients were enrolled in the clinical study in Spain.

A mean half-life of 2.5 h was calculated from the plasma concentrations of eight male and fourteen female rats.

After a further 4 h, we added H2O (five mL) and NADH (ten mL ) to the incubation mixture.

The production campaign comprised lots of five, ten, and twenty kg of raw material.

The patient was released from hospital after 5 months.

SENTENCES CONTAINING ERRONEOUS CORRECTIONS NUMBERS

After the left thoracotomy, dogs were allowed to recover for three days.

Of the seventy-one pediatric patients taking part in this survey, only twenty attended all study visits. 35 patients were lost to follow-up, and fifteen patients withdrew prematurely from the study. One patient died.

11% of the cells had to be discarded. Intra-assay precision ranged from 89-99%.

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