Liz made a tower that was 4 blocks high. Then her brother put 5 more blocks on top.The letter b stands for the total number of blocks in the tower. Which equation can you use to find b?4×5=b4+5=bSubmit

Light bulbs are on sale, so Anna buys 7 packages. Each package has 4 bulbs in it.The letter b stands for the total number of bulbs. Which equation can you use to find b?7+4=b7×4=bSubmit

Liz walked 4 blocks from her house to the bus stop. She rode the bus 6 blocks to the post office. Later, she came home the same way. How many blocks did Liz travel in all?

What number sentence shows how she could find out how many blocks she would need?A. 22 + 42 × 100B. (2 × 2 × 4) × 100C. (2 + 2 + 4 + 4) × 100D. (2 × 4 + 4 × 4) × 100

Question 27Each box contains b books.A shelf holds three and a half times as many books as is shown in this diagram.Which two expressions below represent the total number of books on the shelf?312312b + 4  7𝑏27𝑏2 + 14  7b + 14  7272(2b + 4)

A cube was made with 4 bricks on each side. If the number of bricks should be increased to 5 bricks for a one side, how many more bricks should be added to the cube?