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Exercises: multiplying decimal numbers

Can you do them all? Practice multiplying and dividing decimal numbers with these exercises!

  1. 1

    Multiply the following decimal fractions:

    1. 2.5⋅102.5\cdot10

    2. 2.5⋅0.12.5\cdot 0.1

    3. 5.1⋅2.95.1\cdot2.9

    4. 2.45⋅0.6712.45\cdot0.671

    5. 9⋅0.6869\cdot0.686

    6. 2.5⋅1002.5\cdot100

  2. 2

    Calculate the solution of the following divisions:

    1. 8.45:1008.45:100

    2. 16:0.2516:0.25

    3. 8.5:0.1608.5 : 0.160

    4. 0.125:0.50.125:0.5

    5. 8.45:0.018.45 : 0.01

  3. 3

    Calculate

    1. With which number do you have to multiply 0.01230.0123 in order to get 12301230?

    2. By which number do you have to divide 0.01230.0123 in order to get 0.1230.123?

    3. By which number do you have to divide 0.01230.0123 in order to get 10001000?

    4. How can you conveniently perform the multiplication of any number by 0.010.01 and the division of any number by 0.010.01.

  4. 4

    Calculate the value of the following quotients:

    1. 8.1:98.1:9

    2. 7.5:27.5 : 2

    3. 29.48:1129.48 : 11

    4. 13.811:713.811 : 7


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