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Author Question: Decimal multiplication tends to be poorly understood. What is it that students need to be able to do? (Read 13 times)

ts19998

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on: Feb 18, 2021

Question 1

Approximation with compatible fractions is one method to help students with number sense with decimal fractions. All of the statements are true of 7.3962 EXCEPT:
◦ Closer to 7 than 8.
◦ Closer to 7 than 7.
◦ Closer to 7.3 than 7.
◦ Closer to 7.4 than 7.5.

Question 2

Decimal multiplication tends to be poorly understood. What is it that students need to be able to do?
◦ Discover the method by being given a series of multiplication problems with factors that have the same digits, but decimals in different places.
◦ Discover it on their own with models, drawings and strategies.
◦ Be shown how to estimate after they are shown the algorithm.
◦ Use the repeated addition strategy that works for whole number.
Elementary and Middle School Mathematics: Teaching Developmentally ¦ Van de Walle, Karp, Bay-Williams ¦ 10th Edition
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Marked as best answer by ts19998 on Feb 18, 2021

TheDev123

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Reply #1 on: Feb 18, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Only 45% of students answer this correctly


ts19998

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Reply 2 on: Feb 18, 2021
Wow, this really help

sarah_brady415

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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