5학년 2분기 시험

Round each number to the place named, then add or subtract to estimate.

1. 1
   Nearest thousand: $97,856-83,360$

Add or subtract.

1. 2
   34192

   +4475

Multiply.

1. 3
   $80\times 90=$ 

Round each factor to its greatest place. Then multiply to estimate.

1. 4
   $110\times 92$

Multiply.

1. 5
   25

   ×20
2. 6
   151

   ×58

Round the divisor to the nearest ten. Then use a basic fact to estimate.

1. 7
   $497÷42$

Write each fraction in simplest form.

1. 11
   $\frac{4}{8}=$ 

Write the fractions in the order shown.

1. 14
   Least to greatest: $\frac{8}{9}$; $\frac{1}{10}$; $\frac{7}{12}$; $\frac{5}{9}$

Write each fraction as a decimal, or each decimal as a fraction in simplest form.

1. 15
   $2\frac{29}{100}=$ 

Add. Line up the decimal points.

1. 22
   17.6

   +13.7

Subtract. Line up the decimal points.

1. 23
   9.99

   −9.20

Multiply.

1. 24
   $4.4\times 10=$ 

Multiply.

1. 25
   1.97

   ×5
2. 26
   2.73

   ×0.1

Divide until there is no remainder. Write each quotient as a decimal.

1. 29
   830

Divide.

1. 30
   3.420.06