一、我会计算。
$35 - 15 = $
$50 + 9 = $
$69 - 23 = $
$35 - 15 = $
20
$38 - 12 = $26
$13 - 5 = $8
$20 + 8 = $28
$50 + 9 = $
59
$14 - 4 = $10
$46 - 11 = $35
$56 - 40 = $16
$69 - 23 = $
46
$70 + 9 = $79
$39 - 17 = $22
$52 - 10 = $42
答案:
20 26 8 28 59 10 35 16 46 79 22 42
二、连一连。
$\boxed{34 - 6}$连
$\boxed{37 + 6}$连
$\boxed{34 - 6}$连
$◯{28}$
;$\boxed{51 - 8}$连$◯{43}$
;$\boxed{70 - 2}$连$◯{68}$
;$\boxed{45 - 9}$连$◯{36}$
;$\boxed{37 + 6}$连
$◯{43}$
;$\boxed{32 - 4}$连$◯{28}$
;$\boxed{89 - 21}$连$◯{68}$
;$\boxed{27 + 9}$连$◯{36}$
。
答案:
$\boxed{34 - 6}$连$\bigcirc{28}$;$\boxed{51 - 8}$连$\bigcirc{43}$;$\boxed{70 - 2}$连$\bigcirc{68}$;$\boxed{45 - 9}$连$\bigcirc{36}$;
$\boxed{37 + 6}$连$\bigcirc{43}$;$\boxed{32 - 4}$连$\bigcirc{28}$;$\boxed{89 - 21}$连$\bigcirc{68}$;$\boxed{27 + 9}$连$\bigcirc{36}$。
$\boxed{37 + 6}$连$\bigcirc{43}$;$\boxed{32 - 4}$连$\bigcirc{28}$;$\boxed{89 - 21}$连$\bigcirc{68}$;$\boxed{27 + 9}$连$\bigcirc{36}$。
三、小兔子回家。
1.
2.
1.
33 25 32 28
2.
47 38 46 26
答案:
1. 33 25 32 28
2. 47 38 46 26
2. 47 38 46 26
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