Elementary Arithmetic and Answer

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Lesson 1-8
2. 16
4. 17
Lesson 1-9
5.A. 5463 divided by 9= 607. Multiply 607 by 9 to check your answer. B. 6.00-3.98= 2.02 C. 5.70x0.03= .1710 I moved the decimal over 4 places. D. 4 1/2 divided by 6= 9/12 or ¾. E. 18 1/5-12 2/3= 5 8/15 I found a common denominator. F. 25.75+40.00= 65.75 G. 546.30 divided by .09 move the decimal over two to the right and you get 6070 as your answer. H. 6 divided by 4 ½ flip the second fraction and you get 1 1/3 as the answer. I. 13 7/8+6 1/3 find a common denom as 24 to get 20 5/24 as the answer. J. 8 2/5x1 5/7= 14 2/5 as the answer. Lesson 2-1

1.A. 162,87,75 87+75=162, 75+87+162, 162-87+75, 162-75=87 addition and subtraction. B. 2,4,2 2+2=4 2+2=4 4-2=2 4-2+2 Addition and Subtraction C. ¼, 1/6, 2/3 find a common denominator of 24 and solve. 1/4 x2/3=1/6, 2/3x1/4=1/6, 1/6 divided by 1/4=2/3 1/4divided by 1/6=2/3 Multiplication and Division. D. 2.2,6.6,12.12= NONE 5.A. 1000x15= 15000 B. 20.00-12.98= 7.02 C. 345 divided by 100= 3.45 D. 2/3-1/10= 17/30 found a common denominator. E. 36.4+3.6+4.0= 44.0 F. 1/2x3/2= ¾ G. 2850x6.4= 1824 H. 28.5x6.4= 182.4 move the decimal over 2 places. I. 3612 divided by 42= 86 J. 1/10+17/30 find a common denominator of 30 to get 2/3. L. 3/4x2/1= 1 ½ Lesson 2-2

3.A. o=positive x=negative
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B. ooo, oooox, oooooxx
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