Show:
Money
Doubles plus 1
addition
Subtraction
100

how much is 3 nickels and 4 pennies?

19 cents

100

3+4=

7

100

10+10

20

100

20-10

10

200

How much is 4 dimes and 2 pennies worth?

42 cents

200

8+9=

17

200

30+10

40

200

30-10

20

300

How much is 2 quarters worth?

50 cents

300

10+11

21

300

50+10

60

300

50-10

40

400

How much is 1 dime and 10 pennies worth?

20 cents

400

20+21

41

400

100+10

110

400

80-10

70

500

How much is 2 quarters and 2 times worth?

70 cents

500

40+41

81

500

110+10

120

500

100-10

90