Page 16 - NUMINO Challenge_C2
P. 16
Problem solving Key Points
1 The Frame method of multiplication was *
discovered in China by a soldier while he was 21 31
looking at the frames of a window. The Frame
method uses the same principles as Napier’s
method.
Ⱌ 2
13 Ⱌ
86
22 286
Calculate 21 31 using the Frame method.
2 Solve each problem using Egyptian multiplication. From , write
, 2, below
23 52 18 25 . Write 1, 1 2,
below .
13Number and Operations
1 The Frame method of multiplication was *
discovered in China by a soldier while he was 21 31
looking at the frames of a window. The Frame
method uses the same principles as Napier’s
method.
Ⱌ 2
13 Ⱌ
86
22 286
Calculate 21 31 using the Frame method.
2 Solve each problem using Egyptian multiplication. From , write
, 2, below
23 52 18 25 . Write 1, 1 2,
below .
13Number and Operations
