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30 ______ 40 _____
21 ___________ 26 __________
32 ___________ 38 ___________
eleven
twelve
thirteen
fourteen
fifteen
sixteen
seventeen
eighteen
nineteen
twenty
thirty
forty
twenty-one
twenty-six
thirty-two
thirty-eight
Talk about the prices of the clothes.
$7
$5
$6
$3
$9
$8
Can you solve these problems? 你会回答下列问题吗?
eight +nine = ________.
three + twelve = ______.
sixteen + thirteen = _________ .