charts and diagrams. sparrows and pigeons sit on a fence. when 5 sparrows leave, there remain 2...
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![Page 1: Charts and Diagrams. Sparrows and pigeons sit on a fence. When 5 sparrows leave, there remain 2 pigeons for every sparrow. Then 25 pigeons leave and the](https://reader036.vdocuments.mx/reader036/viewer/2022082404/56649ea35503460f94ba7def/html5/thumbnails/1.jpg)
Think OneThink One
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If 1 and ½ woodchucks can If 1 and ½ woodchucks can chuck 1 and 1/3 cords of wood in chuck 1 and 1/3 cords of wood in 1 and ¼ hours, how many cords 1 and ¼ hours, how many cords of wood can 1 woodchuck chuck of wood can 1 woodchuck chuck
in 1 hour?in 1 hour?
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PATTERNS, SEQUENCES, PATTERNS, SEQUENCES, and FUNCTION MACHINESand FUNCTION MACHINES
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Look for a pattern and find the Look for a pattern and find the missing number missing number xx. .
3 2 4 83 2 4 87 2 1 37 2 1 38 4 8 4 xx 5 54 3 6 94 3 6 9
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A lily pad grows so that each day A lily pad grows so that each day it doubles its size. On the 20it doubles its size. On the 20thth
day of its life, it completely covers day of its life, it completely covers the pond. On what day of its life the pond. On what day of its life
was the pond half covered?was the pond half covered?
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VENN DIAGRAMSVENN DIAGRAMS
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In a school that has 20 teachers, In a school that has 20 teachers, 10 teach humanities, 8 teach 10 teach humanities, 8 teach social studies, and 6 teach social studies, and 6 teach science. Two teach both science. Two teach both
humanities and social studies, humanities and social studies, but none teaches both social but none teaches both social
studies and science. How many studies and science. How many teach both humanities and teach both humanities and
science?science?
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Mental MathMental Math
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Mental MathMental Math
Add from the leftAdd from the left
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462 + 210462 + 210
33.6 + 12.533.6 + 12.5
65.8 + 12.265.8 + 12.2
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Mental MathMental Math
Break and BridgeBreak and Bridge
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74 + 1974 + 191.5 + 2.6 + 3.71.5 + 2.6 + 3.714 + 17 + 3414 + 17 + 34
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Subtracting from the leftSubtracting from the left
Need regroupingNeed regrouping
Don’t need regroupingDon’t need regrouping
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Don’t need regroupingDon’t need regrouping
9154 – 50149154 – 5014
4.75 – 1.324.75 – 1.32
89.67 – 35.4089.67 – 35.40
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Need regroupingNeed regrouping
45 – 27 45 – 27
627 – 418627 – 418
9.45 – 3.469.45 – 3.46