E – ASD – PP33

Which estimate is more accurate for 27.9 + 59.6? 70 or 90

E – ASD – PP34

Which estimate is more accurate for 2.74 + 598? 600 or 800

E – ASD – PP35

Which estimate is more accurate for 28.2 – 5.9? 20 or 25

E – ASD – PP36

Which estimate is more accurate for 120.3 – 19.8? 80 or 100

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