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苏教2011课标版《1.十几减9》集体备课PPT课件优质课下载
(2) 14 is made up of ______ten and ______ ones.
(3) 20 is made up of ________ tens.
(4) 18 is made up of _______ten and ______ones.
(5) ______ ones and ______ ten make 16.
15
1
4
2
1
8
1
6
2. Calculate.
10-9+6= 16-6-5=
14-4-5= 10-9+5=
9+4= 9+( )=11
7
5
5
6
13
2
There are 13 apples in total.
Jenny takes away 9 apples.
How many apples are left?