Question

3. Estimate the product using general rule
(a) 321x506.
(b). 578x161
(c) 9250x29
(d) 19x78
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Answer 1

Answer:

a is 162426

b is 93058

c is 268250

d is 1482

Answer 2

Answer:

Here you go!!!

Step-by-step explanation:

Rule: Turn the no. to nearest hundred/ ten/ thousands.

A

$321 \times 521 \\ 300 \times 500 \\ 150000$

B

$578 \times 161 \\ 600 \times 200 \\ 120000$

C

$9250 \times 29 \\ 9000 \times 30 \\ 270000$

D

$19 \times 78 \\ 20 \times 80 \\ 1600$

So her the number given below the equation is in its rounded off form.

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