Zane needs to buy 27 party favors for the family reunion. The favors cost $2.98
ID: 3145844 • Letter: Z
Question
Zane needs to buy 27 party favors for the family reunion. The favors cost $2.98 each. About how much will the party favors cost? Estimating the Product of a Decimal and a Whole Number You can estimate to check the reasonableness of your product. There are two ways you can estimate. Round both numbers $2.98 × 27 Replace the factors with compatible numbers and multiply mentally. $2.98 × 27 $3 × 30= $90 The favors will cost about $90. $3 × 25=$75 The favors will cost about $75. Zane needs 0.8 ounce of lime juice per person for the punch he is making. He wants to make about 32 servings of punch. Estimate how much lime juice he needs using rounding. Show how you solved the problem. 1. 2. Jo wants to make 125 servings of the same punch that Zane makes. Estimate how much lime juice she needs. Show how you solved the problem. 10. Estimate each product. 5. 9.66 × 046 6. 8.02 x 70 4, 345 × 5.79 3, 19.3×6 .0040 9, 0.13 × 11 10, 99.7× 92 8·45.1 × 5 45X10 7, 1.56× 100 14.0.35 ×9. 13.3 × 0.85 0%! 12. 23.7 X 4.76 11. 147×10.4 139 Digital Reseurces at PearsoeTexas.com Topic 3 Lesson 3-7Explanation / Answer
1)
0.8 * 32
1 * 30 = 30
2)
0.8 * 125
1 * 125 = 125
3)
19.3 * 6
19 * 6 = 114
4)
345 * 5.79
345 * 6 = 2070
5)
9.66 * 0.46
10 * 0.5 = 5
6)
8.02 * 70
8 * 70 = 560
7)
1.56 * 48
2 * 50 = 100
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