Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Multiplying Decimals Materials: Multiplying Decimals Cards (tenths by hundredths) ____________________________________________________________________________ We can rewrite expressions that involve decimals to show common fractions when we multiply tenths by hundredths. Example: 0.5 x 0.07 = ? 5 x 7 = 35 10 100 1000 0.5 x 0.07 = 0.035 1. Choose three expression cards and three word problem cards. Write the fractions that you can multiply to figure out the product for each problem, then complete the equation. 2. Write and solve your own multiplication word problem involving multiplying tenths by hundredths. 3. Check your work with a partner. Explain your thinking. ©K-5MathTeachingResources.com 0.5 x 0.07 0.3 x 0.09 A 0.2 x 0.04 0.6 x 0.08 B 0.9 x 0.06 D C 0.7 x 0.09 E F Ben buys 0.6kg of apples at a cost of 0.90 cents per kilogram. How much does he spend? Explain how to multiply the following: 0.4 x 0.08 G Joe multiplies 20.5 x 3.72 and incorrectly writes 762.6 as his product. Explain Joe’s mistake. J Will the product of 0.6 x 0.03 be greater or less than the product of 0.6 x 0.3? Explain. H I Fred bought 10.5kg of sausages and 3kg of steak. If both the sausages and steak were on sale for 4.50kg, how much did Fred spend? Create and solve a word problem for the following expression: 0.7 x 0.30 K L