Decimals Worksheet - Unit 3 Page 33
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38LESSON
Write each number in standard form.
1.
1
2 and 12 ten-thousandths
a)
b)
7 millionths
16 and 46 hundred-thousandths
c)
1 and 51 millionths
d)
How are the values of the red digits in each number related?
2.
0.626
5.489
48
0.000
355
9.39
a)
b)
c)
d)
The Bigleaf Maple tree is native to the
3.
Queen Charlotte Islands. It produces winged seeds
that can be carried long distances by the wind.
A seed has a mass of about 0.126 582 g.
Write this number as many ways as you can.
Estimate. Which strategies did you use?
4.
2
Tell if your estimate is an overestimate or an underestimate.
6.23
4
21.872
3
9.49
7
a)
b)
c)
18.39
3
125.431
5
19.8
4
d)
e)
f)
The decimal point is missing in each product.
5.
3
Use front-end estimation to place each decimal point.
a)
6.9
7
483
b)
7.53
3
2259
11.288
4
45152
2.307
5
11535
c)
d)
3.005
4
1202
4.916
5
2458
e)
f)
The Giant Fan Palm produces the world’s largest seed.
6.
A seed has a mass of about 9.075 kg.
What is the combined mass of 6 of these seeds?
Multiply. Estimate to place the decimal point.
7 .
4
0.321
6
0.0249
5
0.0043
7
a)
b)
c)
The recipe Sebastian wants to make requires
8.
1.5 L of evaporated milk.
He has four 0.385-L cans.
Does he have enough milk? Show your work.
118
Unit 3
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