Counting in 50s, and 1, 10 and 100 more or less
Draft: not yet checked by a teacherThey're counting up in 50s, finding 10 more than a 3-digit number, drawing base ten to add and take away, and filling in a more-or-less table.
Counting in 50s
Hundred, half, hundred, half.
Base ten: 26 + 52
Draw both numbers, then count the sticks and the dots. For 94 − 3, draw 94 and cross out 3 dots.
The bonus table
Every answer comes straight from 127.
Step by step
- Counting in 50s: it goes hundred, half, hundred, half. 100, 150, 200, 250...
- 10 more than 165: only the tens digit changes, so 165 becomes 175.
- Base ten: sticks for tens, dots for ones. Draw, then count. For 94 - 3, draw 94 and cross out 3 dots.
- The bonus table: every box is worked out from the number in the middle column, not from the box next to it.
AvoidWorking along the row, like taking 10 from the "1 less" answer. Each box comes straight from the starting number in the middle.
