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By rounding each number to 1 significant figure,
estimate the answers to:
a)763 x 42
_______
82

b)39 × 52
_______
3.8 x 4.9

Respuesta :

Answer:

see explanation

Step-by-step explanation:

rounding each number to 1 significant figure

(a)

763 × 42

≈ 800 × 40

= 32000

(b)

39 × 52

≈ 40 × 50

= 2000

(c)

3.8 × 4.9

≈ 4 × 5

= 20

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