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100

Count forward by 10s to fi ll in the missing numbers. 8,_____, 28,_____, _____, 58, _____, _____, _____, 98, _____, _____, 128

18, 38, 48, 68, 78, 88, 98, 108

100

10 + 7 = 

17

100

17 - 7 =

10

100

Use the number line to find the difference. Show your thinking. 53 – 8 = _______

Work on number line varies. 

53 - 8 = 45

100

Jessie and the triplets are going to make some more seed bead bracelets. They have 15 red seeds, 24 blue seeds, 26 black seeds, and 25 green seeds. How many seeds are there in all? Show your thinking.

90

200

Count backward by 10s to fi ll in the missing numbers. 135, 125, _____, 105, _____, 85, _____, _____, _____, 45, _____, 25, _____, 5

115, 95, 75, 65, 55, 35, 15

200

14 - 7 =

7

200

8 + 8 = 

16

200

Find the sum. Show your thinking. 46 + 37 = _______

Work will vary.

46 + 37 = 83

200

It takes 10 seeds to make each bracelet. If Gabby uses 100 seeds, how many bracelets can she make? Show your thinking.

10

300

Salvador has three lucky numbers: 12, 65, and 84. Mark and label each of Salvador’s lucky numbers on the number line. 

         x                                    x            x

300

10 - 8 =

2

300

27 + 16 =

43

300

Find the difference. Show your thinking. 

65 – 29 = _______

Work will vary.

65 - 29 = 36

300

157 - 68 =

89

400

A bundle is worth 10. The total value of this collection of sticks is ______.

78

400

12 - 0 = 

12
400

40 - 29 = 

11

400

Elisa is 25 years old. She has a cousin who is 12 years older. How old is Elisa’s cousin? Show your thinking.

37

400

486 + 154 =

640

500

The total value of this base ten collection is ______.


66

500

9 + 9 = 

18

500

6 - 5 =

1

500

Mateo is 36 inches tall. His dad is 78 inches tall. How many inches taller is Dad than Mateo? Show your thinking. You can use the number line to help, but you don’t have to. 

42

500

491 + ______ = 1000

509