Multiplying Rational Numbers
-2.57 x 3.6=
Answer: -9.252
Work: 2.57
x 3.6
__________
1542
7710
_____________
-9. 252
1 1/3 x 1 2/3 =
Answer: 2 2/9
Work: 20/9 = 2 2/9
What is the reciprocal 7
Answer: 1/7
-5 1/5 ÷ 2 1/3=
Answer: -2 8/35
Work: -5 1/5 / 2 1/3
-26/5 / 7/3
-26/5 x 3/7= -78/35= -2 8/35
-2/7 x 1/6=
Answer: -1/21
Work: -2/7 x 1/6
-1/7 x 1/3=
-1/21
5/9 x 3/15=
Answer: 1/9
Work: 5/9 x 3/15= 1/9
1 1/3 x 2 1/5=
Answer: 2 14/15
Work: 44/15= 2 14/15
7/9 ÷ 6
Answer:7/54
Work: 7/9 x 1/6 = 7/54
3 2/7 ÷ 1 1/4=
Answer: 2 22/35
Work: 92/35= 2 22/35
-1/7 x 4/5 x (-7)=
Answer: 4/5
Work: -1/7 x 4/5 x (-7)
-1/1 x -1/1 x 4/5
1/1 x 4/5= 4/5
3/2 x -7/10=
Answer: -1 1/2
Work: 3/2 x -7/10= -21/20= -1 1/2
1 3/8 x 3 1/3=
Answer: 4 7/12
Work: 55/12= 4 7/12
What is the reciprocal of 100
1/100
1 3/8 ÷ 1 1/12=
Answer: 1 7/26
Work: 33/26= 1 7/26
-7 x 3/49=
Answer: -3/7
Work: -7/1 x 3/49= -7 x 3/-1 x 49= -21/49= -3/7=-3/7
5/12 x 9/10=
Answer: 3/8
Work: 5/12 x 9/10= 3/8
1 3/4 x 7 1/5=
Answer: 12 3/5
Work: 1 3/4= 4/4 x 1 + 3= 7/4 = 12 3/5
5/2 ÷ 1/4=
Answer: 10
Work: 5/2 x 2/1=10
2 1/4 ÷ 1 1/2=
Answer:1 1/2
Work: 3/2= 1 1/2
-5/9 x -3/15=
Answer:1/9
3/4 x 1/3=
Answer: 1/4
Work: 3/4 x 1/3= 1/4
2/5 (3) + 3/10
Answer: 1 1/2 OR 1.5
Work:
1st: 2/5 (3) = 2/5 x 3/1 = 6/5
2nd: 6/5 + 3/10 = 12/10 + 3/10 = 15/10 = 3/2 = 1 1/2
5/11 ÷ 6/7=
Answer: 35/66
Work: 5/11 x 7/6= 35/66
1 4/11 ÷ 1 1/4=
Answer: 1 1/11
Work: 12/11= 1 1/11
-8 1/2 - 4 2/9=
Answer: 12 13/18
Work: -8 1/2 + (-4 2/9)=
- 8 9/18 + -4 4/18=