Topic 1
What place is the 8 in?
0.498
The thousandths place
Solve: 0.96 + 1.05
2.01
How many zeros will the product of 30 x 105 have?
6 zeros
Solve: 92.3 x 104
923,000
What is Miss Hill's favorite color?
Green
Round 0.758 to the place of the underlined/bolded digit.
0.76
Solve: 82.7 - 5.59
77.11
Solve: 243 x 8
1944
Jennifer planted a tree that was 0.17meter tall. After 10 years, the tree was 100 times as tall as when she planted it. What is the height of the tree after 10 years?
17 meters
A store ahs a contest to guess the mass of 10,000 peanuts. If a peanut has a mass of about 0.45gram, what would be a reasonable guess for the mass of 10,000 peanuts?
4,500 grams
Jackson has 2,000 baseball cards in his collection. Gabe has 1/10 as many baseball cards in his collection as Jackson. How many baseball cards does Gabe have in his collection?
In science class, students weighed different amounts of clay. How many ounces of clay did the students have in total?
Carmen: 4.361 ounces
Kim: 2.704 ounces
Simon: 5.295 ounces
4.361 + 2.704 + 5.295 = 12.36 or 12.360 ounces
Solve 867 x 59
51,153
Solve: 27.4 x 7
191.8
Daniel has 102 stamps. Manuel has twice as many stamps as Daniel. Kendra has twice as many stamps as Manuel. How many stamps do they have in all?
Manuel: 204
Kendra: 408
102 + 204 + 408= 714 stamps
Write 863.141 in expanded form.
(8x100) + (6x10) + (3x1) + (1x 1/10) + (4x 1/100) + (1x 1/1000)
OR
(8x102) + (6x101) + (3x100) + (1x 1/10) + (4x 1/100) + (1x 1/1000)
The annual rainfall in Albany is 0.33 inches less than the annual rainfall in Nashville. How much less rainfall did Nashville get than Miami?
Miami: 61.05 inches
Albany: 46.92 inches
Nashville: 46.92 + 0.33 = 47.25
61.05 - 47.25 = 13.8 inches
Tia drives 127 miles a week. Mac drives 23 times as many miles as Tia a week. How many miles does Mac drive a week?
127 x 23 = 2,921 miles
0.76
The first place swimmer's time in the 100 meter freestyle at a local swim meet was 1.32 seconds faster than the second place swimmer. What was the time for the first place swimmer? What was the difference in time between the second and third place swimmers?
2nd: 49.33 seconds
3rd: 53.65 seconds
1. 49.33 - 1.32 = 48.01 seconds. The first place time was 48.01 seconds
2. 53.65 - 49.33 = 4.32. The difference between the second and third place swimmers was 4.32 seconds.
A digit in one place represents ______1______ as much as it represents in the place to its right and ______2______ of what it represents in the place to its left.
1. 10 times
2. 1/10
Patrick has a 600-meter skein of yarn. He used 248.9 meters of yarn to make a hat. Does he have enough yarn left to make a scarf that uses 354.03 meters of yarn? Explain.
600 - 248.9 = 351.1 meters of yarn left.
No he does not have enough yarn because he needs 354.03 meters to make a scarf and he only has 351.1 meters.
A farmer grows 128 red tomato plants and 102 yellow tomato plants. Each plant produces about 32 tomatoes. The farmer plans to sell each tomato for $2. Explain how you could estimate the total amount of money the farmer would earn if she sells all of the tomatoes.
128 --> 130 102 --> 100
130 + 100 = 230
230 x 2 = $460
Tell whether or not the decimal point has been placed correctly in the product. If not, rewrite the product with the decimal point correctly placed.
56.2 x 7.9 = 4439.8
Incorrectly placed
443.98
The heights of four boys measured 152.0cm, 150.75cm, 149.5cm, and 149.25cm. Bradley is the tallest. Calvin is taller than Josh, but shorter than Mark. Josh is the shortest. What is Mark's height?
Bradley: 152.0cm
Calvin: 149.5cm
Josh: 149.25cm
Mark: 150.75cm