rounding
place value
adding
subtracting
word
100

round 87 to the nearest 10s place

90

100

what is the 9 in


2,394

tens place 

100

23+45

68

100

56-12

44

100

if bob has 23 pieces of candy and he eats 8 how many does he have 

15

200

round 65 to the nearest 10s place 

70

200

what is the 3 in 


312

hundreds place

200

56+100

156

200

78-21

57

200

if jimmy had 8 slices of pizza and he ate 3 how many would he have

5

300

round 93 to the nearest 10s place

90

300

what is the 6 in 


246

ones place

300

87+63

150

300

132-32

100

400

round 124 to the nearest 10s place 

120

400

what is the 7 in 

7,345

thousands

400

89+76

165

400

267-152

115

500

round 634 to the nearest 10s place 

630

500

what is the 2 in 


1,235

hundreds

500

100+23

123

500

1,478-453

1,025

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