Question

1. write each number in standard form.

a) 12 billion 312 thousand 21
b) 9 million 8 thousand 12
c) 17 billion 12 million 34 thousand
d) 100 billion 32 thousand

1. circle the greater number in each pair.

a) 89 hundred thousand + 21 2 billion
b) 153 million + 32 thousand 1 billion
c) 110 million 312 thousand
d) 42 million 42 hundred thousand

1. estimate. use a place - value chart to help you.

a) 4128756 is about __________ million.
b) 4128756 is about __________ thousand.
c) 1834567109 is about __________ billion.
d) 1834567109 is about __________ million.

Explanation:

Step1: Convert numbers to standard form

a) 89 hundred - thousand + 21 = 890000+21 = 890021, 2 billion = 2000000000. Since 2000000000>890021, 2 billion is greater.
b) 153 million + 32 thousand = 153000000+32000 = 153032000, 1 billion = 1000000000. Since 1000000000>153032000, 1 billion is greater.
c) 110 million = 110000000, 312 thousand = 312000. Since 110000000>312000, 110 million is greater.
d) 42 million = 42000000, 42 hundred - thousand = 4200000. Since 42000000>4200000, 42 million is greater.

Step2: Estimate numbers

a) 4128756: Rounding to the nearest million, since 4128756 is closer to 4 million, the answer is 4 million.
b) 4128756: Rounding to the nearest thousand, 4128756 is about 4129 thousand.
c) 1834567109: Rounding to the nearest billion, 1834567109 is about 2 billion.
d) 1834567109: Rounding to the nearest million, 1834567109 is about 1835 million.

Answer:

3.
a) 2 billion
b) 1 billion
c) 110 million
d) 42 million
4.
a) 4
b) 4129
c) 2
d) 1835