(1) Calculate and check with the solution numbers.

(a)	(b)	(c)	(d)
28 + 20 = 48	25 + 23 =	40 + 18 =	28 + 17 =
20 + 21 =	36 + 17 =	25 + 40 =	20 + 28 =
20 + 21 =	17 + 40 =	34 + 20 =	34 + 30 =
34 + 14 =	30 + 28 =	14 + 45 =	15 + 13 =
15 + 30 =	38 + 30 =	74 + 13 =	25 + 21 =
Results: 41   57   58   65   45   48   53   68   46 41   45   68   54   48   48  58   87   59   87

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(2) Which symbol is needed? <, > or = ?

(a)	(b)	(c)	(d)
28 + 25 54	37 11 + 24	19 + 27 21 + 14	28 + 11 24 + 25
25 + 11 56	43 19 + 11	25 + 17 22 + 28	11 + 19 11 + 25

(3) Enter the missing numbers.

+ 20 23 36 19 39 60

+ 13 30 37 29 43 53

+ 15 27 36 19 39 50

(4) Enter the missing numbers.

(a)	(b)	(c)
16 + 19 + 13 = _______	40 + 22 + 13 = _______	29 + 30 + 25 = _______
26 + 13 + 26 = _______	15 + 35 + 10 = _______	35 + 13 + 38 = _______
18 + 23 + 18 = _______	41 + 17 + 12 = _______	20 + 55 + 16 = _______
7 + 11 + 21 = _______	40 + 15 + 29 = _______	25 + 25 + 39 = _______
23 + 17 + 6 = _______	23 + 30 + 23 = _______	38 + 17 + 31 = _______

(5) Add the values below up to the last row:

[2]

[4]

[6]

[8]

[10]

[12]

[14]

[16]

[18]

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

[   ]

[10]

[   ]

[   ]

[   ]

[   ]

[   ]

[   ]

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

[   ]

[   ]

[   ]

[40]

[   ]

[   ]

[   ]

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

[   ]

[   ]

[   ]

[   ]

[   ]

[   ]

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

[   ]

[   ]

[   ]

[   ]

[   ]