知識與能力訓(xùn)練四年級英語上教版
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在“數(shù)學(xué)文化周”中，同學(xué)們參加了“我是清點小能手”活動?？靵砜纯凑l清點得又快又準(zhǔn)確吧！
①I have
four
toy cars. You have
five
toy cars. How many toy cars do we have?
We have
nine
toy cars.
Four
plus
five
equals
nine
.
4
+
5
=
9
.
② I have
two
teddy bears. You have
four teddy bears
.
How many
teddy bears do we have?
We
have
six teddy bears.
Two
plus
four
equals
six
.
2
+
4
=
6
.
答案：①B: four, five; G: nine; Four plus five equals nine.; 4+5=9
解析：根據(jù)示例，先確定總數(shù)，再分兩部分，用加法算式表示。假設(shè)共有9輛玩具車，我有4輛，你有5輛，算式4+5=9。
②B: two, four teddy bears, How many; G: have; Two plus four equals six.; 2+4=6
解析：同理，假設(shè)共有6個泰迪熊，我有2個，你有4個，算式2+4=6。（答案不唯一，合理即可）
活動中，同學(xué)們需根據(jù)“已有物品清單”及“所需物品清單”進行核對，統(tǒng)計出還需要購買的物品及數(shù)量。快來一起算算吧！
① We need
twelve
toy cars. We have
nine
toy cars.
Twelve
minus
nine
equals
three
. We need
three
toy cars.
② We need
eight teddy bears
. We have
six teddy bears
.
Eight
minus
six
equals
two
. We need
two teddy bears
.
答案：（因“已有物品清單”和“所需物品清單”具體數(shù)量未明確，根據(jù)示例格式，假設(shè)數(shù)據(jù)如下）
① We need twelve toy cars. We have nine toy cars. Twelve minus nine equals three. We need three toy cars.
② We need eight teddy bears. We have six teddy bears. Eight minus six equals two. We need two teddy bears.
解析：根據(jù)示例，用所需數(shù)量減去已有數(shù)量得到需要購買的數(shù)量，此處假設(shè)所需玩具車12輛，已有9輛，需3輛；所需泰迪熊8個，已有6個，需2個。（實際需根據(jù)具體清單數(shù)據(jù)計算）
