Question

Question Progress
1/3 Marks
a)
By rounding to 1 significant figure, estimate the answers to these questions:
b)
247 × 201
756 x 8674
Homework Progress
c) 3025 × 2007
22/32 Marks

Answer 1

Part (a)

$247 \approx 200\\\\201 \approx 200\\\\\implies 247 \times 201 \approx 200 \times 200=\boxed{40000}$

Part (b)

$756 \approx 800\\\\8674 \approx 9000\\\\\implies 756 \times 8674 \approx 800 \times 9000 =\boxed{7200000}$

Part (c)

$3025 \approx 3000\\\\2007 \approx 2000\\\\\implies 3025 \times 2007 \approx 3000 \times 2000=\boxed{6000000}$