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The Basic Steps:
• Line up the numbers by the decimal point.
• Fill in missing places with zeroes.
• Add or subtract.
Subtracting Across Zeroes• If you have several zeroes
in a row, and you need to borrow, go to the first digit that is not zero, and borrow.
• All middle zeroes become 9’s.
• The final zero becomes 10.
Multiplying Decimals1
1) 0.6 x 0.4
2) 0.008 x 0.5
3) 3.0 x 0.074) 0.12 x 0.6
5) 5.23 x 1.2
6) 1.25 x 8
7) 23 x 0.25
8) 15.12 x 0.0069) 48 x 12.3
10)251 x 0.007
Multiplying Decimals2
1) 9.5 x 0.862) 4.3 x 9.53) 73 x 0.594) 59 x 0.755) 5.8 x 4.66) 52 x 0.937) 4.1 x 0.238) 0.31 x 4.6
9) 0.35 x 0.7010)4.7 x 5811)2.1 x 3212)5.4 x 1313)47 x 0.6814)8.2 x 7315)15 x 7.816)1.8 x 6.1
Step 3
Check your answer. Multiply the
quotient by the divisor.
Your answer should be the dividend.
6.6
X 4
26.4
Swinging Monkeys!
Follow these steps and you will be great at dividing decimals!
Remember: Whatever the OUTSIDE monkeys do – the INSIDE monkeys do
also!
Steps in Dividing Decimals1. Make the divisor (outside number) a
whole number by moving (swingin’) the decimal to the right as many places as it takes to make it a WHOLE NUMBER.
2. In MONKEY TERMS: Whatever the outside monkey does (how far it swings) the inside monkey does also. Then the monkey climbs up and sits on the roof!
Swingin’ Monkeys
64.122.Divisor
Moved (swung) the decimal point 1 place to the right
Swingin’
Monkey
Steps in Dividing Decimals – Swingin’ Monkeys
64.122.
3. Place (swing) the decimal point in the answer (quotient) lined up with the decimal point in the dividend (on the roof).