Transcript Math – LEAP Review – GLE’s - Ms. Martinez's Fourth

Math – LEAP Review – GLE’s
Presented by
Vicki Martinez
Number and Number Relations
 Read and write place value in word,
standard, and expanded form through
1,000,000.
 Standard form = 4,078,341
 Word Form = Four million, seventy-eight
thousand, three hundred forty-one
 Expanded Form = 4,000,000 + 0 +70,000 +
8,000 + 300 + 40 + 1
2. Read, write, compare, and order whole
numbers using place value concepts, through
1,000,000
 Practice reading large numbers.
 33,905,085
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



Compare numbers.
348,893 > 348,839
(> means greater than)
(< means less than)
90,045 < 99,045
Order the numbers
 Order the numbers from least to
greatest.
 345 874 435 884
 Answer:
 345 435 874 884
Order the Numbers
 Order the numbers from greatest to
least:
 9,887
8,879
8,798
9,978
 Answer:
 9,978
9,887
8,879
8,798
3. Illustrate when a number is divisible by
2, 3, 5, or 10.
 If the last digit is even, the number is divisible
by 2.
 Example:
 896 - ends in “6”. 6 is an even number.
So 896 is divisible by 2.
 29,765,433 - ends in “3”. 3 is an odd
number. So this number is NOT divisible by
2.
Divisible by 3
 If the sum of the digits is divisible by 3,
the number is also .
 Example:
 345 (3 + 4 + 5 =12 and 12 ÷ 3 =4)
 That means that 345 is divisible by 3.
 345 (3 + 4 + 6 =13 and 13 is not divisible
by 3). SO 345 is not divisible by 3.
Divisible by 4
 If the last two digits from a number
are divisible by 4, the number is also.
 Example:
 4,528 ( 28 ÷ 4 =7) So, since we can
divide 28 by 4, the entire number is
divisible by 4.
Divisible by 5
 If the last digit is a 5 or a 0, the
number is divisible by 5.
 Example:
 155 This number ends in 5, so it is
divisible by 5.
 150 This number ends in 0, so it is
divisible by 5
 153 This number is not divisible by 5.
Divisible by 10
 If the number ends in 0 , the number
is divisible by 10.
 Example:
 340 ends in 0. It is divisible by 10.
 343 does not end in 0. It is not
divisible by 10.
4. Know all basic facts for
multiplication and division through 12
x 12 and 144 ÷ 12.
 http://www.multiplication.com/cmptr
games/quickpractice.htm
Prime Numbers
 A prime number has exactly 2
factors, 1 and itself.
 Example:
 The factors of 5 are: 1 x 5
 So 5 is a prime number.
 The factors of 6 are 1 x 6; and 2 x 3.
 6 is NOT a prime number.
Composite Number
 A composite number has more than 2
factors.
 Example:
 The factors of 6 are 1 x 6; and 2 x 3.
 6 is composite number because it has
more than 2 factors.
 The factors of 5 are: 1 x 5
 So 5 is a NOT a composite number
because it only has 2 factors.
5. Read and write decimals through
hundredths and connect them to
corresponding fractions.
 Everything to the left of the decimal is a whole
number. Everything to the right of the decimal
is a fraction that can be written as a decimal.

You only have to remember tenths and hundredths.
Learn This!
 A decimal is another way to write a
fraction. In $4.25 , $0.25 is part of
a dollar.
 It is 25/100 of a dollar.
 O.25 = 25/100 = 1/4
Learn This!
 A decimal is another way to write a
fraction. In $4.50 , $0.50 is part of
a dollar.
 It is 50/100 of a dollar.
 O.50 = 50/100 = ½ = 2/4
Learn This!
 A decimal is another way to write a
fraction. In $4.75 , $0.75 is part of
a dollar.
 It is 75/100 of a dollar.
 O.75 = 75/100 = 3/4
In a decimal, the farther right the
number the smaller it's value.
 234.1 = _2_hundreds + _3_tens +
_4_ ones +_1 tenths
Always remember all decimals can
be written as fractions.
 O.7 = seven tenths = 7/10
 0.5 = five tenths = 5/10 = ½
 0.70 = seventy hundredths = 70/100
 0.50 = fifty hundredths = 50/100
Fractions and Decimals
 1.4 = one and four tenths
 1.4 = 1 4

10
 39.6 = thirty nine and six tenths
 39.6 = 39

6
10
Fractions & Decimals: Hundredths
 1.34 = one and thirty four
hundredths
 1.34 = 1 34

100
In a decimal, the farther right
the number the smaller it's value.
 234.1 = __hundreds + __tens +
__ ones +_ tenths

234.1 = _2_hundreds + _3_tens
+ _4_ ones +_1 tenths