حل أوراق عمل Revision Unit Six الرياضيات المتكاملة الصف الخامس Reveal
حل أوراق عمل Revision Unit Six الرياضيات المتكاملة الصف الخامس Reveal.
1. Which of these are equivalent to 3.8 x 103? Choose all that apply.
A. 3.8 x 10 x 3
B. 3.8 x 10 x 10 x 10
C. 380
D. 3,800
2. Knowing that 4.8 x 102 = 480, what is 4.8 x 104?
A. 480
C. 48,000
B. 4,800
D. 480,000
estimate
3. Ben earns $2.75 for each crate of berries he picks. About how much would Ben earn if he picks 4 crates of berries?
about $12
4. According to his step-counter, Jerry walked 4.5 x 104 steps during the past week. How many steps did Jerry walk last week?
A. 45 steps
B. 450 steps
C. 4,500 steps
D. 45,000 steps
5. Which sum is equivalent to 3.7 x 0.6?
A. 180+ 42
B. 184.2
C. 1.84.2
D. 1.8 +0.42
9. Bruce knows that 5.8 x 17 98.6. Use place-value patterns to decide whether each equation is True or False.
10. Jaquan knows that 47 x 0.36 = 16.92. What is 4.7 x 3.6?
A. 1.692
B. 16.92
C. 169.2
D. 1,692
11. A rectangular photograph measures 9.2 inches long by 3.8 inches wide. Which is the best estimate for the area of the photograph?
A. about 13 square inches
B. about 27 square inches
Cabout 36 square inches
D. about 40 square inches
9×4 =36
12. What is the product? Use place-value patterns to solve the equations.
58 x 71 = 4,118
58 x 71= 411.8
0.58 x 71 = 41.18
13. Theodore buys mangoes for $4.08 per pound. About how much money does Theodore need if he buys 3.7 pounds of mangoes? Explain which estimation strategy you used.
=4.08 × 3.7
4 × 4 = 16
14. A baker uses 0.9 pounds of blueberries to make a pie. How many pounds of blueberries does the baker need to make 36 pies? Explain the strategy you used to solve.
32.4 pounds; : I used partial products:
0.9 x 30= 27 and 0.9 x 6 = 5.4; then 27 +5.4 32.4
15. Deirdre fills 43 bubble containers with bubble mix. Each bubble container holds 2.7 ounces. How many ounces of bubble mix does Deirdre use? Explain the strategy you used to solve.
116.1 ounces; : I used an area model and
partial products: 40 x 2 = 80, 40 x 0.7 = 28, 3 x 2 = 6, and 3 x 0.7 2.1; then 80 +28+ 6+ 2.1 = 116.1
