Exercise No. 1F

NOTE: Answers to all questions are given at the end of this exercise.

Question No. 1:

Estimate mentally the following:

(a) 41²

(b) 58²

(c) 112²

(d) 32³

(e) 39³

(f) 98³

(g) 198²

(h) 301³

 

Question No. 2:

Give an estimate of each of the following mentally:

(a) √37

(b) ³√26

(c) √63

(d) ³√124

(e) √84

(f) √142

(g) ³√1004

(h) √897

 

Question No. 3:

(a) 26²

(b) 37²

(c) 78²

(d) 99²

(e) 123²

(f) 13³

(g) 29³

(h) 34³

(i) 643³

(j) 109³

(k) √961

(l) √2209

(m) √3481

(n) √11236

(o) √69169

(p) ³√4096

(q) ³√68921

(r) ³√314432

(s) ³√753571

(t) ³√1906624

(u) 18² + 11³ – √484 + ³√4913

(v) √676 x 9³ – 17² + √2704

(w) 24³ ÷ √4096 + ³√512 x 44²

(x) ³√1331 x √2916 – 42³ ÷ 21²

(y)  (7³ x √576 + ²√512)÷( √7764 – 2³)

 

Question No. 4:

Determine whether each of the following is a prime factor:

(a) 101

(b) 227

(c) 323

(d) 413


Answers

(from left to right)

IMG_20160427_0017_02


IMG_20160427_0018


IMG_20160427_0019


IMG_20160427_0020


 IMG_20160427_0021_01


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