___________
Maths
Bridging 100: counting on and back in 10s, adding/subtracting multiples of 10
Starter quiz
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Give to class
What is the missing addend? 6 +
______
= 10
'4' ✓
What is the most efficient way to partition 6 to complete the calculation 7 + 6?
3 and 3 ✓
4 and 2
5 and 1
What is 1 more than 99?
'100' ✓
105 −
______
= 100
'5' ✓
What number is shown by the arrow?
105
115
125 ✓
135
Match the base ten representations to the numbers.
A
⇔
111 ✓
B
⇔
110 ✓
C
⇔
101 ✓
+
What number is shown by the arrow?
Match the base ten representations to the numbers.