5학년 3분기 시험

Find the least common multiple.

1. 1
   Find the least common multiple (LCM) of 3 and 4.

Find the least common denominator (LCD).

1. 2
   $\frac{1}{6}$ and $\frac{3}{8}$ 

Round each fraction to $0$, $\frac{1}{2}$, or $1$. Then estimate.

1. 3
   $\frac{5}{6}-\frac{1}{3}\approx$ 

Subtract. Write each answer in simplest form.

1. 7
   $\frac{1}{2}-\frac{1}{12}=$ 

Fill in the missing fraction. Write it in simplest form.

1. 8
   $\boxed{}\frac{\boxed{}}{\boxed{}}+2\frac{1}{2}=$ $5\frac{2}{3}$

Write each improper fraction as a mixed number, and each mixed number as an improper fraction.

1. 9
   $2\frac{3}{8}=$ 

Round each to the nearest whole number.

1. 10
   $1\frac{5}{8}\approx$ 

Round each mixed number to the nearest whole number. Then estimate.

1. 11
   $9\frac{1}{5}-5\frac{3}{4}\approx$ 

Add. Write each answer in simplest form.

1. 12
   $2\frac{1}{12}+2\frac{1}{2}=$ 

Find each fraction of the number.

1. 22
   $\frac{2}{3}$ of $30$ is 

Do not multiply. Write >, <, or = in each circle.

1. 23
   $\frac{3}{8}\times \frac{1}{4}$$\frac{1}{4}$

Fill in each box. 1 ft = 12 in · 1 yd = 3 ft · 1 gal = 4 qt · 1 qt = 2 pt · 1 pt = 2 c · 1 lb = 16 oz

1. 28
   $13\text{ c}=$ $\boxed{}\text{ qt}\boxed{}\text{ c}$

Write >, <, or = in each circle.

1. 29
   $9,000\text{ mm}$$9\text{ m}$