(1) Calculate and check with the solution numbers.

(a)	(b)	(c)	(d)
30 + 13 = 43	25 + 21 =	45 + 16 =	30 + 20 =
15 + 27 =	40 + 18 =	32 + 37 =	28 + 28 =
28 + 21 =	20 + 38 =	33 + 23 =	31 + 25 =
31 + 10 =	30 + 28 =	14 + 48 =	11 + 18 =
11 + 22 =	36 + 25 =	74 + 18 =	25 + 27 =
Results: 49   58   61   69   33   46   58   61   52 42   33   61   56   41   43  58   92   62   92

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

(a)	(b)	(c)	(d)
25 + 27 34	59 23 + 19	20 + 25 27 + 23	25 + 23 19 + 27
16 + 12 33	47 10 + 17	13 + 13 13 + 26	12 + 10 17 + 16

(3) Enter the missing numbers.

+ 20 29 36 20 36 51

+ 17 20 33 23 50 50

+ 13 29 33 16 39 54

(4) Enter the missing numbers.

(a)	(b)	(c)
16 + 15 + 18 = _______	34 + 28 + 20 = _______	24 + 31 + 20 = _______
22 + 5 + 25 = _______	14 + 40 + 11 = _______	38 + 18 + 34 = _______
19 + 24 + 15 = _______	43 + 17 + 5 = _______	14 + 51 + 20 = _______
8 + 12 + 22 = _______	27 + 16 + 27 = _______	24 + 28 + 35 = _______
24 + 15 + 7 = _______	29 + 28 + 28 = _______	36 + 20 + 37 = _______

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

[1]

[4]

[7]

[10]

[13]

[16]

[19]

[22]

[25]

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

[   ]

[11]

[   ]

[   ]

[   ]

[   ]

[   ]

[   ]

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

[   ]

[   ]

[   ]

[52]

[   ]

[   ]

[   ]

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

[   ]

[   ]

[   ]

[   ]

[   ]

[   ]

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

↘ + ↙

[   ]

[   ]

[   ]

[   ]

[   ]