Decimal Addition
2.48+4.20
6.68
2.48-2.1=
0.38
250x3
750
round each factor to the nearest tenth then add them.
5.68+9.32
5.70+9.30=15.00
3,000+4,000
7,000
3.24+9.14
12.38
3.56-2.04=
1.52
362x7
2,534.
Estimate the following factors by rounding them to the nearest tens then multiplying them.
79 and 44
80x40=3,200
(3.44-3.22)+6.34x3=
19.24
9.20+9.18
18.38
7.848-3.28=
4.568
4362x4
17,448
Round the factors to the nearest hundred then multiply them.
198x349
200x300=60,000
What is the answer to a multiplication problem called?
The product.
True or False: the decimal point needs to be lined up while adding
True
4.45-0.2=
4.25
If 5 monkeys eat 6 bananas each day, how many bananas do they eat in a year(365 days)?
They eat 2190 in one year.
78x65=
round the question above to the nearest tens then multiply them.
80x70=5,600
Where does the word, “mathematics“ come from?
the word mathematics comes from the Greek word, “mathematike“.
Kevin says 5.66+8.36 is 1.402… what did Kevin do wrong?
He put the decimal point in the wrong place.
5.555-0.0001
5.5549
Mr. Harris buys one cupcake for each of his students. Each cupcake cost $1.25. However, there is a deal going on where you can get 10 cupcakes for just $1! If Mr. Harris buys 34 cupcakes, how much money does he spend?
He spent $8.
45x67=
can you round the factors above then multiply them?
50x70=3500
FREE 500 POINTS!!!!!!!!
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