100以內(nèi)數(shù)的加減法

1、100以內(nèi)數(shù)的加減法課前準(zhǔn)備；1、下面的這些數(shù)中，哪兩個(gè)數(shù)可以湊成mbthr479 3如t妞i【答案】1+9=10 2+8=10 3+7=1010,請你連一連，然后把算式寫出來 mm15( 28156訓(xùn)(j|l陽|$4+6=10 5+5=102、下面的小魚只要能湊成整十?dāng)?shù)就是一對好朋友，哪些小魚是好朋友呢？請大家找一找12+18=3030+20=505+15=203+37=40 9+21=30 6+24=30例題講解；小朋友，知道一位數(shù)，兩位數(shù)，三位數(shù)它們的區(qū)別嗎?v/ tk粉h計(jì)算2+3=3+2=1+4=1 + 8 =2 + 7 =7 + 5 =1 + 5 =6 + 8 =9+3=5+8=6

2、+9=5 + 6 =8+7 =3+9 =5+8 =2+5=2+8=4+3=5+1 =6 + 3 =2 + 2 =4 + 4 =9 + 3 =2 + 9=4 + 8=7 + 5=5 + 9 =6 + 3 =8 + 9 =4 + 7 =5+3=7+2=6 + 4 =1+2 =5+1 =3+7 =8+1 =4 + 4 =5+6=7+4=8 + 4 =6+ 7 =7 + 3 =3 + 4 =7 + 5 =6 + 8 =9 + 0 =7 + 4 =計(jì)算16 8 =15-713 4 =12-5=12-8=14-3=15-1 =16 3 =12 2 =14 5 =19 3 =12-9=14 8=17-5=1

3、5-9 =16 3 =18-9 =14 7 =15-3=17-2=6 4 =11-2 =151 =13-7 =18-1 =14 4 =15-6=17-4=18 4 =16 7 =17 3 =13 4 =17 5 =12-3=13-2=114=13 8 =12-7 =17-5 =11-5 =16 8 =19-3=15-8=16-9=15 6 =18 7 =13-9 =15 8 =56+ 15 =29 + 33 =26+54 =23+36=34+21=12+34= 11 + 87 =12+7 =20+53 =21 + 25 =63+ 10 =12+54=20+80=45+35=5 + 91 =62

4、 + 32 =25 + 42 =43 + 42 =29 + 30 =45+23=87+2=66+34 =10+32 =45+ 13 =3 + 67 =84+1 =4+54 =診，計(jì)算28+46=39+21=58+16=19+37 =13+68 =29+53 =29+25 =12+18=26+35=46+35=19 + 13 =69 + 12 =27 + 45 =43 + 37 =45+29=44+17=68+34 =19+32 =45+ 19 =23+67 =66+ 15 =15-11 =98-25 =87-16 =96-15 =28-17 =20-11 =25-21 =63-10 =計(jì)算41

5、-32 =76-27 =87-18 =96-17 =26-17 =27-9 =25-16 =33-3=68-80-20=59-45-35=27-89-35=55-98-16=80-39-23=79-59-10=88-93-62=54-93-45=62-70-65=51 -45-35=26-83-35=55-92-16=80-3129=71 -51-13=80-57 =38 =14 =21 =6 =65 =34 =31 =57 =38 =18 =27 =26 =65 =34 =63-10 =93-68=54-37 =38 + 38 =33 + 41 =84-53 =82-50 =2 + 45 =

6、16 + 21 =34-18 =5 + 31 =25 + 73 = 75-29 =32 + 49 =14 + 3 =76-57 =27 + 69 =65-17 =52-1 =1+81 =90 + 6 =51 -27 =12 + 52 =80 - 33 =75 - 63 =84-31 =93-21 =23 + 64 =58-46 =59 + 5 =11+46 =57 + 35 =68 - 25 =59 - 35 =2 + 3 =28 + 28 =48 + 16 = 70-47 =27 + 39 =76 - 58 =61 -3 =89 - 56 =87 + 3 =79-55 =51-25 =46

7、7 =82-27 =82+ 15 =4 + 20 =84-74 =43 7 =69-11 =52 + 43 =14 + 42 =77+9 =55+21 =28+53 =83-76 =19-15 =83-40 =50-19 =89-10 =56+9 =29+67 =39-23 =82+ 13 =93-38 =73+23 =95-26 =57+ 19 =39+9 =90-29 =89 - 42 =44-28 =8+10 =50-19 =18+56 =79 - 32 =20+26 =34-13 =27+34 =89 - 67 =5 + 48 =75-9 =92-3 =42-7 =47-8 =26-7

8、 =52-3 =80-2 =36-9 =78-4 =72-2 =45-9 =86-8 =40-2 =46 9 =43-4 =35 + 5 =85 + 2 =59-4 =64 + 6 =32 + 7 =49-5 =60-4 =11+20 =45-3 =25 + 4 =36-5 =84 + 4 =88-4 =76 + 0 =93-3 =56 + 20 =64 + 6 =65+3 =12 + 6 =29-7 =33+2 =23 + 5 =37 + 1 =29-3 =18-2 =30 + 8 =43+1 =23 + 7 =47 + 4 =88+3 =26 + 8 =19 + 6 =28+5 =23 +

9、 8 =89 + 6 =75+5 =26 + 9 =25 + 6 =50+37 =61+9 =85 + 4 =91 + 8 =71-6 =69-10 =65-8 =96-2 =18-2 =78+ 10 =63+3 =30+8 =52-3 =18+5 =15-3 =3 + 40 =38-3 =86+2 =47 + 6 =53+6 =86 + 6 =49+7 =82+5 =73 + 7 =37 + 4 =78+3 =27 + 60 =9 + 25 =35 + 6 =2 + 40 =86+2 =16 + 9 =5+18 =17+3 =36+6 =39 + 8 =26 + 7 =7 + 38 =6+1

10、8 =32 + 8 =25 + 5 =13+7 =86+8 =16 + 9 =34 + 6 =5+37 =14+7 =39 + 2 =27 + 4 =50+5 =54+9 =10 + 40 =6+10 =18+50 =74+6 =23 + 70 =47 + 4 =88+3 =47 + 6 =26 + 8 =19 + 60 =48+50 =23+6 =83 + 8 =19 + 6 =75+5 =36+6 =98-4 =63-5 =15 + 4 =29+5 =10 + 8 =99-9 =15-4 =4+37 =30-3 =24-9 =70+3 =40 + 6 =25 + 4 =38-8 =39+8

11、 =19+60 =95-40 =82-5 =78+5 =37+9 =70 + 30 =84-2 =68+7 =70+60 =68-9 =60-7 =87+9 =37 + 2 =38-9 =71 +9 =39+ 10 =99+1 =88-9 =70-5 =39+8 =78+50 =58-10 =30-3 =48+7 =18+7 =20 + 5 =64 - 32 =87-72 =50-24 =我守收于產(chǎn)4 ”4 ?+明矗理、門&a c占喳i少年高斯：;高斯是著名的德國數(shù)學(xué)家、物理學(xué)家、天文學(xué)家，是近代數(shù)學(xué)的奠基者之一1777 年，高斯生于德國不倫瑞克 .小時(shí)候，他的家里很窮.冬天的晚上，剛吃過晚飯， 父親就讓高斯上床睡覺，以節(jié)省取暖的燃料和燈油每當(dāng)這時(shí)，高斯就帶著一顆蕪菁