a =400 b=100
Step-by-step explanation:
a.
Given the question as( 763 × 42 ) / 82 rounding to 1 significant figures the question will be;
(800 × 40 ) / 80
=400
b. Given the question as;
(39 × 52 ) / 3.8 × 4.9
Rounding this to 1 significant figure will be;
(40×50 ) / 4 × 5
10 ×10
=100
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Significant figures :https://brainly.com/question/11566364
Keywords : rounding, significant figures, estimate
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