MathTalkIdeas

	A	B
1		Estimate each answer: 1. Which is greater 86 x 38 or 88 x 36? 2. What is 0.52 x 789? 3. Which is greater, 12/17 or 5/8? 4. 4953 ÷ 68 5. 0.4 x 58.6 x 5 x 3
2	Which is greater, 26 x 4 or 24 x 6? By about how much?
3	Which is greater, 86 x 38 or 88 x 36?
4	Which is greater, 79 x 25 or 75 x 29?
5	0.48 x 92?
6	0.52 x 70?
7	Which is greater, 12/17 or 5/8?
8	2(36 / 9) x [ 23 - (4 x 3) ]
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10	Which two are closer: 1/4, 1/2, 3/5?
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12	Which is greater, 13/19 or 2/3?
13	What is the area of this rectangle? (+ pic of 2.5" by 5.25" rectangle)
14	How do these two containers compare? (+ pic of 2 rectangular prisms)
15	0.48 × 650?
16	If I am paid $8.75 per hour, how much am I paid in 5 eight-hour work days?
17	Which is greater, 65 x 47 or 67 x 45?
18	You need to cook a 24-pound turkey. The cookbook says it takes 15 minutes to cook every pound of turkey weight. How long will take to cook the turkey?
19	A pair of jeans costs $60. The sales tax is 8.25%. What is the total cost for the pair of jeans?
20	What fraction of this square region is shaded? Stripes are equal in width, and the figure is drawn to scale.
21	Can you figure out the rule: 2, 4, 8, …?
22	Three corn dogs cost $5.25. How much does one corn dog cost?
23	3.75 x 32?
24	37.5 x 16?
25	18 x 50
26	How many dots? (10x10 grid of dots with two rectangles cut out)
27	How many dots? 5 groups of 5 groups of 5 (5 cubed!!)
28	8 1/2 divided by 1/4
29	1001 divided by 9
30	How many dots? (10x10 grid of dots with a 5x5 square missing)
31	How many squares on the border of the figure?
32	Can 3087 be in the pattern described by the given pattern rule? How do you know? Option 1: start at 9 and keep adding 3: Option 2: the term value is 4 times the term number +3
33	16 x 25
34	15.72 - 14.98
35	1/9
36	95 - 48
37	Which is greater, 48 x 34 or 44 x 38?
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39	What is 5 % of 80?
40	What is 15% of 62?
41	What is 815 divided by 5?
42	One kilogram is about 2.2 pounds. So 34 kilograms is about ______ pounds.
43	What is 42 x 98?
44	2.5 x 4.04 x 0.9?
45	45 x 1.58 + 5.5 x 15.8
46	12.5 x 2.4
47	2.5 x 3.2
48	125 x 80.8
49	Which is a better deal: 15 cans of cat food for $12 or 23 cans of the same cat food for $20?
50	If I am paid $8.50 per hour, how much am I paid in 5 eight-hour work days?
51	Find an integral fraction between 1/4 and 1/3 such that the denominator is a positive integer less than 10.
52	67 x 35
53	96 x 36
54	72 x 48
55	823 x 15
56	733 x 32
57	643 x 192
58	1.75 x 16
59	212 - 150.75
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61	If 6x7=42, 66x67=4422, and 6,666 x 6,667 = 44,442,222, what is 6,666,666 x 6,666,667?
62	Say an advertiser makes $0.10 every time someone clicks on their ad. Only 20% of people who visit the site click on their ad. How many people need to visit the site for the advertiser to make $20?
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64	How many times a day do a clock’s hands overlap? 24 times
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67	If the probability of observing a car in 30 minutes on a highway is 0.95, what is the probability of observing a car in 10 minutes (assuming constant default probability)?
68	If you look at a clock and the time is 3:15, what is the angle between the hour and the minute hands? (The answer to this is not zero!)
69	Four people need to cross a rickety rope bridge to get back to their camp at night. Unfortunately, they only have one flashlight and it only has enough battery left for seventeen minutes of light. The bridge is too dangerous to cross without a flashlight, and it’s only strong enough to support two people at any given time. Each of the campers walks at a different speed. One can cross the bridge in 1 minute, another in 2 minutes, the third in 5 minutes, and the slow poke takes 10 minutes to cross. How do the campers make it across in 17 minutes?
70	Answer:1) First 1 and 2 will cross the bridge in 2 mins.(2 has been counted once) 2) 1 will come back in 1 mins total = 3 mins. ( 1 has been counted once) 3) 5 and 10 will cross the bridge in 10 mins total = 13 mins (10 has been counted once) 4) 2 will go back in 2 mins total = 15 mins(2 has been counted twice) 5) 2 will bring back 1 in 2 mins total = 17 mins( 2 has been counted thrice)
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