Mental Calculation Paractice 2

44, 46, ___, 50, 52, 54

• 45

• 47

• 48

• 49

26, 24, ___, 20, 18, 16

• 25

• 23

• 22

• 21

10 more than 33

is ___.

• 43

• 23

• 34

• 32

53 + 9 = ___

• 62

• 61

• 63

• 54

10 less than 41

is ___.

• 31

• 21

• 42

• 51

23 – 9 = ___

• 14

• 16

• 26

• 13

63 + 15 = ___

• 78

• 72

• 52

• 58

74 – 13 = ___

• 61

• 87

• 67

• 81

75 + 19 = ___

• 84

• 94

• 64

37 – 18 = ___

• 21

• 29

• 19

• 41