Question

By rounding to 1 significant figure estimate the answer
78 x 92
615 x 38
423 x 764

Answer 1

Answer:

The First one is 7200

Step-by-step explanation:

Answer 2

7000

23000

320000

Step-by-step explanation:

78 X 92 = 7176 ==> 7000

615 X 38 = 23370 ==> 23000

423 X 764 = 323172 ==> 320000

By rounding to 1 significant figure means

I . look at the first non zero digit if rounding to one significant figure

II . look at the digit after the first non zero digit if rounding to two significant figures

III . draw a vertical line after the place value digit that is required

IV .  look at the next digit