Adding multiples of 10

40 + 50 = _____

70 + 30 = _____

80 + 40 = _____

50 + 30 + 40 = ?

• more than 100

• an odd number

• double 60

• more than 120

60 + 50 + 30

• between 120 and 140

• double 70

• more than 120 but less than 140

• more than 150

90 + 10 + 50

• more than 200

• equal to 50 x 3

• between 160 and 170

• between 145 and 155

47 + 50

84 + 40

76 + 70

405 + 30 = ?

• an even number

• an odd number

• more than 450

• more than 430 but less than 440