Pyramid Sums:3 Levels (Page 2 of 2) in pdf

Pyramid Sums:3 Levels Page 2

LAMINATE IF POSSIBLE

PYRAMID S UMS: 4 L EVELS

Now y ou t ry

24 + 2 8 = 5 2

11 + 1 3 = 2 4

13 + 1 5 = 2 8

6 + 5 = 1 1

5 + 8 = 1 3

8 + 7 = 1 5

Start a t t he b ottom a nd w ork

Start a t t he t op a nd w ork

down

20 c an b e s plit i nto 2 0 & 3 0

20 c an b e s pilt i nto 5 & 1 5,

30 c an b e s pilt i nto 1 5 & 1 5

15 -‐ 4 = 1 1, 5 -‐ 4 = 1

Ways t o f ill i n n umbers i n t he

3. Close y our e yes. C hoose 4 r andom n umbers f rom a 1 00 c hart.

1. Roll 4 d ice. P ut o ne n umber i n e ach b ox

2. Roll 3 n ormal d ice. R oll a 1 -‐20 d ice. P ut o ne n umber i n e ach b ox

4. Choose 4 r andom n umeral c ards. P ut o ne n umber i n e ach b ox

bottom o f t he p yramid

Put o ne n umber i n e ach b ox

Ways t o f ill i n n umbers i n t he

2. Roll 3 n ormal d ice. R oll a 1 -‐20 d ice. A dd t hem t ogether. P ut t he

3. Choose 1 r andom n umber f rom a 1 00 c hart t hat i s b igger t han

1. Roll 4 d ice. A dd t hem t ogether. P ut t he n umber i n t he t op b ox

4. Choose 1 r andom n umeral c ard. P ut t he n umber i n t he t op b ox

top o f t he p yramid

number i n t he t op b ox

70 P ut t he n umber i n t he t op b ox

South A frican N umeracy C hair P roject 2 015

Pyramid Sums:3 Levels Page 2