NO PREP - JUST PRINT! Grade 3 - Manitoba Math Curriculum Updated 2013 – This resource covers all expectations in the Grade 3 – Manitoba Math Curriculum. This product contains 551 activity sheets. Check out each of the strands below to learn more about the resources included in this bundle. Strand 1 - Number (Number Sense)Counting forwards and backwards by 3, 4, 5, 10, 25, and 100Representing and describing numbers to 1000Comparing and ordering numbers to 1000Estimating quantities less than 1000