MAT1236 Study Guide - Final Guide: Decimal Mark
14 Jun 2018
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Decimals:!!
Place!value!system!can!be!extended!to!the!right!of!the!units!place!to!show!numbers!between!
consecutive!whole!numbers.!Place!value!grid!is!helpful!to!assist!students!in!understanding!decimal!
notation.!Comparing!decimals:!do!this!by!looking!at!the!number!in!the!largest!place!value!(2.2!is!
bigger!than!2.09,!even!though!it!has!less!digits)!this!is!easier!when!we!have!the!same!number!of!
decimal!places.!Rounding!rollercoaster:!helpful!when!rounding!decimals.!Decimal!fractions!are!like!
common!fractions,!though!instead!of!partitioning!into!halves!and!thirds!we!partition!into!tenths!and!
hundredths.!Teaching!decimals:!money!place!value!mat,!MAB!blocks,!hundredths!grid,!number!line.!
Calculations!can!be!taught!by!removing!the!decimal!point!and!returning!it!after!calculation.!Problems!
that!arise!may!be!associated!with!a!poor!understanding!of!the!fraction!concept.!Strategies!to!correct!
problems:!always!saying!each!place!value!after!decimal!point,!use!concrete!materials!and!number!
lines,!have!students!predict!numbers!and!use!a!calculator!to!check!answers.!(1,4,9,16)!*
!
Document Summary
Place value system can be extended to the right of the units place to show numbers between consecutive whole numbers. Place value grid is helpful to assist students in understanding decimal notation. Comparing decimals: do this by looking at the number in the largest place value (2. 2 is bigger than 2. 09, even though it has less digits) this is easier when we have the same number of decimal places. Decimal fractions are like common fractions, though instead of partitioning into halves and thirds we partition into tenths and hundredths. Teaching decimals: money place value mat, mab blocks, hundredths grid, number line. Calculations can be taught by removing the decimal point and returning it after calculation. Problems that arise may be associated with a poor understanding of the fraction concept.
