9. 12 edges
Work: 4 horizontal edges on top, 4 horizontal edges on bottom, 4 vertical edges for sides
10. Ten-thousands place
Work: The 8 is highlighted. The order of places is: ten-thousands, thousands, hundreds, tens, ones
11. 10 4/5
Work: 54 ÷ 5 ——> 50÷5 = 10 with 4 left over and put into a fraction of 4/5
12. 3,000
Work: 2 is in the thousands place so you look to the place behind it and there is an 8. If the number behind is 5 through 9 then you round up. 8 is above 5, therefore, you round the 2 up to a 3.
13. 0.45
Work: The pattern is +0.03 so 0.42+0.03=0.45
14. 54 cakes
Work: 6 eggs per 1 cake • 9 cakes = 6•9=54 eggs used
15. 378 desks in the school
Work: 6 rows • 7 desks per row = 42 desks in 1 classroom. 42 desks • 9 classrooms = 378 desks in the whole school