Unit 3 Lesson 15 Practice Quiz

Teresa has a box of raisins. She eats 10 of them. Now there are 190 raisins in the box. How many raisins were in the box at the start?

• 90

• 180

• 200

• 290

Carlos counts aloud and says these numbers. What number is Carlos skip-counting by?

284, 384, 484, 584, 684, 784, 884

• twos

• fives

• tens

• hundreds

Which sets of numbers show skip-counting forward or backward by fives?

• 590, 595, 600, 605, 610, 615

• 845, 855, 865, 875, 885, 895

• 80, 75, 70, 65, 60, 55

• 390, 395, 400, 405, 410, 415

• 455, 555, 655, 755, 855, 955

Ellen counts 349 stickers. Joseph counts 100 more stickers than Ellen. How many stickers does Joseph count? Explain how you know.

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Which shows skip-counting by tens?

• 210, 310, 410, 510, 610, 710

• 829, 839, 849, 859, 869, 879

• 440, 445, 450, 455, 460, 465

• 320, 430, 540, 650, 760, 870

What is 998-100?