Test - LEAP 2025 Math Grade 8 Chapter 2

LEAP 2025 Math Grade 8 Chapter 2 Sample

1 pt

$(2.8 \times 10^{8}) \div (7 \times 10^{5}) =$

$4 \times 10^{12}$

$4 \times 10^{2}$

$4 \times 10^{35}$

$4 \times 10^{1.4}$

1 pt

Which expression is closest to $(9.81 \times 10^{- 3}) \times (3.75 \times 10^{- 41})$ ?

$3.68 \times 10^{- 43}$

$3.68 \times 10^{- 44}$

$1.07 \times 10^{- 43}$

$3.68 \times 10^{39}$

1 pt

Put the following numbers in order from least to greatest.

$1.1 \times 10^{10} 10 1.01 \times 10^{9} 1.11 \times 10^{3}$

$1.1 \times 10^{9} 10 1.01 \times 10^{3} 1.11 \times 10^{10}$

$1.1 \times 10^{3} 10 1.01 \times 10^{9} 1.11 \times 10^{10}$

$1.1 \times 10^{10} 10 1.01 \times 10^{3} 1.11 \times 10^{9}$

$1.1 \times 10^{10} 10 1.01 \times 10^{9} 1.11 \times 10^{3}$

1 pt

Miss Sheldon found a pint of ocean water contained beneficial bacteria numbering $1.7 \times 10^{5}$ . Express this as a standard number.

17,000

170,000

1,700,000

17,000,000

1 pt

10.

Airplanes can go $4.9 \times 10^{2}$ miles per hour. If a flight between two secret locations is $1.2 \times 10^{4}$ miles, about how many hours will it take the airplane to get to its destination?

$24.5$ hours

$24.5 \times 10^{2}$ hours

$24.5 \times 10^{4}$ hours

$24.5 \times 10^{7}$ hours

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