換算値を選びます：kg、g、mg、mcg の間、または L と mL の間は1000、1 kg = 2.2 lb、小さじ1 = 5 mL、大さじ1 = 15 mL、1 fl oz = 30 mL、1カップ = 240 mL。
不要な単位が約分されるよう、分数で書きます。速度の場合は、変わる単位ごとに分数を1つ使います。
向きを確認します：小さい単位に変えると数は大きくなります。
丸めるのは最終的な答えだけで、問題が指定する精度に合わせます。
2演習問題
1.看護助手（CNA）の知識ふつう
How many staff are usually needed to use a mechanical (full-body) lift?
AOne, because the machine does the lifting
BThree or four, one for each corner of the sling
COnly one, as long as the resident is light
DAt least two, according to facility policy
2.看護助手（CNA）の知識むずかしい
A resident with arthritis is slow to button his shirt but wants to do it himself. The nursing assistant is running late. What should the nursing assistant do?
AAllow him time and encourage him to finish it himself
BLeave him alone and come back after lunch
CButton the shirt for him to save time
DTell him to wear a shirt without buttons from now on
3.看護の計算と単位換算ふつう
練習問題（数値は架空のもので、臨床上の指針ではありません）。 注射の投与量の計算結果は 14.0182 mL です。 この練習問題のルールは「1 mL以上の容量は、mLの小数第1位に丸める」です。記録する値 x はいくつですか。
14.0182 mL
x = mL
4.看護の計算と単位換算むずかしい
練習問題（数値は架空のもので、臨床上の指針ではありません）。 体重 54 kg の患者に対する指示は 8 mcg/kg/min です。この投与速度 D を mg/h で表してください。小数第2位に丸めてください。
8 mcg/kg/min54 kg
D = mg/h
3溶液
1.看護助手（CNA）の知識
答え: D · At least two, according to facility policy
これが答えになる理由
Most facilities require at least two trained staff to use a mechanical lift: one to operate it and one to guide the resident and keep them safe. The nursing assistant follows facility policy and the care plan.
答え
D · At least two, according to facility policy
2.看護助手（CNA）の知識
答え: A · Allow him time and encourage him to finish it himself
これが答えになる理由
Encouraging residents to do as much as they can for themselves maintains strength, dignity and independence. Doing tasks for them because it is faster can lead to loss of abilities and self-esteem.
答え
A · Allow him time and encourage him to finish it himself