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
A resident's family brings a handmade quilt from home. What should the nursing assistant do?
ATell the family that personal items are not allowed
BWelcome it, add it to the belongings list and label it
CGive it to the laundry for use by all residents
DPut it in storage so that it does not get dirty or lost
2.看護助手（CNA）の知識むずかしい
During morning care, a usually talkative resident is quiet, her face is flushed and her skin feels hot. What should the nursing assistant report?
AHer change in behavior, flushed face, hot skin and temperature if taken
BNothing yet, because she may simply be tired from a poor night's sleep
CThat the resident probably has the flu and should stay in her room
DThat the resident is in a bad mood today and does not want to talk
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）。 少量の注射の投与量の計算結果は 0.87377 mL です。 この練習問題のルールは「1 mL未満の容量は、mLの小数第2位に丸める」です。記録する値 x はいくつですか。
0.87377 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）。 ある点滴は 50 mcg/min を投与します。この投与速度 D を mg/h で表してください。
50 mcg/min1 h = 60 min1 mg = 1000 mcg
D = mg/h
3溶液
1.看護助手（CNA）の知識
答え: B · Welcome it, add it to the belongings list and label it
これが答えになる理由
Residents have the right to keep personal possessions. Recording and labeling them helps prevent loss and shows respect for the resident's property.
答え
B · Welcome it, add it to the belongings list and label it
2.看護助手（CNA）の知識
答え: A · Her change in behavior, flushed face, hot skin and temperature if taken
これが答えになる理由
A change from a resident's usual behavior, together with flushed, hot skin, may signal fever or illness. The nursing assistant reports the observations factually, including measured vital signs, without guessing the diagnosis.
答え
A · Her change in behavior, flushed face, hot skin and temperature if taken