단위와 측정Units & Measurement · 문제집Worksheet

단위를 바꾸어라.

(a) $3.2\,\text{km}$는 몇 m (b) $450\,\text{cm}$는 몇 m (c) $0.25\,\text{L}$는 몇 mL (d) $5\,\text{kg}\ 300\,\text{g}$은 몇 kg

Convert.

(a) $3.2\,\text{km}$ to m (b) $450\,\text{cm}$ to m (c) $0.25\,\text{L}$ to mL (d) $5\,\text{kg}\ 300\,\text{g}$ to kg

넓이 단위를 바꾸어라.

(a) $1\,\text{m}^2$는 몇 cm$^2$ (b) $2.5\,\text{m}^2$는 몇 cm$^2$ (c) $30{,}000\,\text{cm}^2$는 몇 m$^2$

Convert the area units.

(a) $1\,\text{m}^2$ to cm$^2$ (b) $2.5\,\text{m}^2$ to cm$^2$ (c) $30{,}000\,\text{cm}^2$ to m$^2$

시간 단위를 바꾸어라.

(a) $1.5$시간은 몇 분 (b) $2$시간 $20$분은 몇 분 (c) $0.75$시간은 몇 분 (d) $200$분은 몇 시간 몇 분

Convert the units of time.

(a) $1.5$ hours to minutes (b) $2$ hours $20$ minutes to minutes (c) $0.75$ hour to minutes (d) $200$ minutes to hours and minutes

다음을 재기에 알맞은 단위를 고르고, 대략의 값을 어림하여라.

(a) 연필의 길이 (b) 서울에서 부산까지의 거리 (c) 사과 한 개의 무게 (d) 물병 하나의 들이

Choose a sensible unit for each measurement and estimate a typical value.

(a) the length of a pencil (b) the distance from Seoul to Busan (c) the mass of an apple (d) the capacity of a water bottle

계산하여라.

(a) $0.75\,\text{km} + 380\,\text{m}$ (m와 km로 각각) (b) $2\,\text{kg}\ 350\,\text{g} + 1.8\,\text{kg}$ (kg으로)

Compute.

(a) $0.75\,\text{km} + 380\,\text{m}$ (in m and in km) (b) $2\,\text{kg}\ 350\,\text{g} + 1.8\,\text{kg}$ (in kg)

가로 $3.5\,\text{m}$, 세로 $2\,\text{m}$인 방바닥을 한 변이 $25\,\text{cm}$인 정사각형 타일로 빈틈없이 덮으려 한다. 타일은 몇 장 필요한가?

A floor $3.5\,\text{m}$ by $2\,\text{m}$ is to be covered completely with square tiles $25\,\text{cm}$ on a side. How many tiles are needed?

가로 $20\,\text{cm}$, 세로 $10\,\text{cm}$, 높이 $5\,\text{cm}$인 직육면체 통에 물을 가득 채우면 몇 mL, 몇 L인가?

A box $20\,\text{cm}$ by $10\,\text{cm}$ by $5\,\text{cm}$ is filled with water. How many mL is that, and how many L?

민서는 "$1\,\text{m} = 100\,\text{cm}$이므로 $2\,\text{m}^2 = 200\,\text{cm}^2$"라고 말했다. 바른 값을 구하고, 민서의 값이 왜 틀렸는지 한 줄로 설명하여라.

Minseo says, "$1\,\text{m} = 100\,\text{cm}$, so $2\,\text{m}^2 = 200\,\text{cm}^2$." Find the correct value and explain in one line why Minseo's is wrong.

$1\,\text{m}^3$은 몇 L인가? 그리고 $0.3\,\text{m}^3$의 물이 들어가는 욕조에는 몇 L가 들어가는가?

How many liters is $1\,\text{m}^3$? And how many liters does a bathtub holding $0.3\,\text{m}^3$ of water contain?

하루는 몇 초인가? 그리고 $1{,}000{,}000$초는 며칠 몇 시간 몇 분 몇 초인가?

How many seconds are in a day? And how many days, hours, minutes, and seconds is $1{,}000{,}000$ seconds?

$1\,\text{m} = 100\,\text{cm}$인데 $1\,\text{m}^2 = 10{,}000\,\text{cm}^2$인 이유를 그림으로 설명하여라. 그리고 같은 방법으로 $1\,\text{m}^3$이 몇 cm$^3$인지 밝혀라.

Explain with a picture why $1\,\text{m} = 100\,\text{cm}$ and yet $1\,\text{m}^2 = 10{,}000\,\text{cm}^2$. Then use the same method to find how many cm$^3$ are in $1\,\text{m}^3$.

어떤 직사각형의 둘레는 $2.4\,\text{m}$이고, 가로가 세로보다 $20\,\text{cm}$ 길다. 가로와 세로는 각각 몇 cm인가?

A rectangle has perimeter $2.4\,\text{m}$, and its length is $20\,\text{cm}$ more than its width. Find the length and the width in cm.