BUILDING TABLE OF EIGHTS

1. 8 equals what part of 16? What part of 24? Of 40? Of 48? Of 56? Of 64? Of 72? Of 80?

2. 16 equals how many 8's? Of 64? Of 80? Of 96?

What part of 32?

101

Of 32?

Of 88?

Of 48?

3. 24 equals how many 8's? What part of 48? Of 72? Of 96?

4. 32 equals how many 8's? How many 16's? What part of 64? Of 96?

5. 40 equals how many 8's? 6. 48 equals how many 8's? many 24's? What part of 96?

7. 56 equals how many 8's?

What part of 80?

How many 16's? How

8. 64 equals how many 8's? 16's? 32's?

9. Add the heavy center number to each number in the same large square. Subtract it from each number larger than itself. Multiply in the same way.

1. In each problem add upward, then downward, then by lines to the right and left:

2. Add these numbers; subtract them; and multiply

2. A boy picked 38 quarts of berries in one week, 42 in the second, 28 in the third, and 18 in the fourth. How many quarts did he pick? How many pecks?

3. A man traveled 284 miles by rail and 8 times as far by steamer. How far did he travel by steamer?

4. During the summer a family used 248 quarts of milk. During the winter they used more than that. How many quarts did they use during the winter?

5. In an orchard there are 56 trees in each row, and

as many rows as there are trees in a row.

rows are there? How many trees in all?

How many

6. If 32 bushels of wheat make 8 barrels of flour; how many bushels will be needed to make 64 barrels of flour? 7. Read each line across the page and answer the questions. Then read each column from the top downward.

MEASURING SOLIDS

105

1. Place two one-inch cubes in a row. Place another row of two one-inch cubes in front of the first row. How many rows of one-inch cubes are there?

2. How many one-inch cubes, or cubic inches, are there in a row? How many are there in both rows?

3. Place four more one-inch cubes in a layer on top of these cubes. How many layers of cubes are there?

4. How many cubic inches are there in a layer? How many are there in both layers?

5. Find a two-inch cube on page 104.

6. Build a two-inch cube with the one-inch cubes. 7. How many layers of one-inch cubes are there in the two-inch cube?

8. How many rows are there in each layer?

9. How many one-inch cubes are there in each row? 10. How many one-inch cubes are there in both rows? 11. How many one-inch cubes are there in both layers? 12. Take away one layer of cubes. How many oneinch cubes are taken? What part of the two-inch cube is taken?

13. Take away one row from the remaining layer. What part of the layer is taken? What part of the twoinch cube is taken?

14. Take away a one-inch cube from the remaining row. What part of the row is taken? What part of the layer is taken? What part of the two-inch cube?

15. A one-inch cube is what part of a two-inch cube? Two one-inch cubes are what part? Three one-inch cubes are what part? Four are what part? Five?

16. How many 1-inch cubes in of a 2-inch cube? In of a 2-inch cube? In of a 2-inch cube?