Week 1 Assignment.
Melissa Powers 6/1/2019
Section 1.1 Q’s 30, 33, 38, 50, and 54
#30) six hundred nine thousand nine hundred forty-eight
A: 609,948
#33) write in expanded form 5287
A: five thousand two hundred eighty-seven
#38) write in expanded form 301,309
A: three hundred thousand one thousand three hundred and nine
#50) round the number given to the given place value. : 647,989 (ten thousands)
A: 650,000 7(the number to the right of the place value) is greater than 5. The number of the place value
is increased by 1 and all numbers after are zeros.
#54) True or False? If a # rounded to the nearest ten is less than the original #, then the ones digit of the
original # is greater than 5.
A: True.
Section 1.2 Q’s 38, 55, 64, 68, 76
#38) 692+2107+3196+92
A:
692
+2107
_________
2,799
#55) add-then round to nearest hundred. 241+569+390+1672
A:
241
9+1 = 10. Carry
390 first column no change
810
no
+ 569
the one to next ten spot.
+1672 second column carry 1
+2062
_______
(tens) 6+1+4 = 11. Carry
_____ to next. 6+3+1 = 10 carry
______ any
810
1 to hundreds spot.
Rounded to nearest hundredth: 2,900
2,062 1 to thousand column.
2,872
carrying
number
#64) add- then round to nearest ten thousand. 542,698+97,327+7,235+73,667+173,201
A: 542698
carry the 2 to the tens column (28)
+ 97327
add 2 to the tens column total (22)
+
carry the 2 from tens column to hundredth and add to total plus the 2 (21)
7235
+ 73667
carry 2 from hundreds column to thousands. And add total of column plus the 2 (24)
+ 173201
carry 2 from thousands column to ten thousands column and add column (29)
__________
carry 2 from ten thousands to hundred thousands column and add column (8)
894,128
#68) Demographics The Census Bureau estimates that the U.S. population will grow by 296 million
people from 2000 to 2100. Given that the U.S. population in 2000 was 281 mil- lion, find the Census
Bureau’s estimate of the U.S. population in 2100.
A: add 281 million to 296 million
281000000
+296000000
__________
the only number needing to be carried over
is the ten hundredth million column (17)
carry the 1 and add to last (left side) column
577000000
#76) Energy In a recent year, the United States produced 5,102,000 barrels of crude oil per day and
imported 10,118,000 barrels of crude oil per day. Find the total number of barrels of crude oil
produced and imported per day in the United States. (Source: Energy Information Administration.
A: Add the two numbers given
10118000
the only column that a number needs to carry
+ 5102000
is the thousand column to the ten thousand
________
column
15220000
Section 1. 3. Q’s 26,69,86,90,91,102
#26) 77
subtract both columns
-36
____
41
#69) 2600
take “10” from next value spot to subtract current column. Ones column (8)
- 1972
making tens column # 9 9-7 ( ten was borrowed from 6 to make it five and the 2
______
was made a 1 and canceled the lower 1 out. (15-9=6) (9-7=2) (10-2=8) total: 628
628
#86) what is 29,797 less than 68,005? 68005-29797=38,208
#90) ______+39=104
104-39=65
#91) 67+____=90
90-67=23
#102) Car Sales The graph at the right shows the number of cars sold in India for each year from
2003 to 2007. 1,500,000 1,000,000 500,000 0 ’03 ’04 ’05 ’06 ’07
a. Has the number of cars sold increased each year from 2003 to 2007? Yes
b. How many more cars were sold in India in 2007 than in 2003? 1379979-707198=672,781
c. Between which two years shown did car sales increase the most?
03’ to 04’ : 902096-707198=194898
05’ to 06’ : 1143076-1061572=81504
06’ to 07’ : 1379979-1143076=236903
06’ to 07’ showed the biggest increase.
Section 1.4 Q’s 38,41,42,74,83,96,104
#38) 3690
X
3690
5
X
_______
3690
5
X
______
0 (=0x5)
5
______
450 (=90x5)
18000
18000
+
450
_______
18450
#41) Find the product of 5,7,and 4
5
35
X7
X 4
____
____
35
140
#42) Find the product of 6,2, and 9
6
12
X2
x 9
______
____
12
108
#74) 758
758
758
X 209
x 209
x 209
+
450
_____
_____
_____
+
72
72 (=8x9)
450 (=50x9)
140000 (700x200)
140000
________
140522
#96) 865
X
86x6=516(0)
6
+
________
0
30
________
5x6=30. Carry 3 to tens place and add.
5190
#108)
Determine whether each of the following statements is always true, sometimes true, or never true. a.
A whole number times zero is zero. Always true. Answer: sometimes true
b. A whole number times one is the whole number. Answer: TRUE
c. The product of two whole numbers is greater than either one of the whole numbers. Answer: True
Section 1.5 Q’s 26,38,74,83,96,108
#26) 5x____=170
A: 170/34=5 Check: 5x34=170
#38) 921/4 = 230.25 Check: 230.25x4=921
#74) 33/8943=271 Check: 271x33=8943
#83) 2344/546= 4.29…
#96) Divide-estimate to determine if quotient is reasonable.
906304/34=26656 estimate to nearest ten. 26660 reasonable.
#108) 60(seconds)x 60 (minutes)=3600
25200/3600=7 per second sold.
Section 1.6 Q’s 12,34,47,54,64,72
#12)write in exponential notation 2.2.2.4.7.7.7
2(2) . 4(1) . 7(7) parentheses are exponent, I don’t know how to make a floating 2
#34) simplify 4(2) . 9(2) . 6(2)
4x4 = 16
9x9 = 81
6x6= 36
+___
133
#47) 4.(5-3)+2= 5-3=2 4x3=12+2=14
#54) 5.3(2)+8= 3x3=9 exponent first 5x9=45+8=53
#64) 12+3.5= 3x5=15+12=27
#72) (7-3)(2)exponent / 2-4+8= 7-3=4x4=16/2=8-4=4+8=16
Section 1.7 Q’s 13,22,46,71,86,88
#13) 56
1/56=56 56 and 1 are factors
2/56=28 28and 2 are factors
3/56= does not divide evenly
4/56= 14 14 and 4 are factors
5/56= does not divide evenly
6/56= does not divide evenly
7/56 = 8 8 and 7 are factors
8/56= 7 7 and 8 are factors Factors are repeating. All factors have been found.
#22) 49
1/49= 49 49 and 1 are factors
2/49 does not divide evenly
3/49 does not divide evenly
4/49 does not divide evenly
5/49 does not divide evenly
6/49does not divide evenly
7/49= 7 7 and 7 are factors
8/49 does not divide evenly
9/49 does not divide evenly all factors have been found
#46) 83 is the prime factorization?
#71) 2. 6 and 66
#86) 9 and 25
# 88) 8=2 and 4
24= 2,4, 8, 12, 6, 3\
72= 2 and 36