Page 8 - steps 4b 02.pdf

RM 12

II Addition II II II II II II II II II 4b:5

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On this grid, the numbers in the white squares
100 150 250 are added from left to right and downwards.
".
Each number in the shaded squares is a total.
250 200 450 Can you see how they were found?

• 350 350 700

OJ Complete these grids without a calculator.

a b c
200 134 175 225 300 165

166 300 250 275 412 120

.

d e . f
165 315 310 275

406 513

9

The total of the numhers in the 4 white squares
equals the largest total in the shaded squares.

1000 [!] Using a calculator, check that this is true

for each grid.

Adding three-digit numbers.
Name
Materials: calculator
Date

© 1994 HarperCollins Publishers STEPS 4b