27+51= 11+81= 13+43= 42+43= 16+52= 31+44= 15+83= 31+52= 68+21= 52+15= 11+63= 44+51= 43+24= 61+14= 47+31= 53+11= 57+12= 75+24= 13+53= 41+44= 51+26= 51+26= 32+35= 16+82=
44+23= 21+52= 54+21= 22+33= 23+44= 27+32= 65+31= 14+41= 53+25= 11+81= 37+62= 36+64= 35+31= 25+52= 24+41= 63+31= 45+21= 45+21= 42+47= 21+41= 25+33= 52+27= 42+27= 73+26=
32+45= 46+11= 28+41= 34+23= 31+65= 73+26= 21+42= 13+55= 25+43= 13+62= 81+12= 34+63= 44+34= 25+44= 63+24= 51+16= 64+31= 28+61= 54+25= 57+22= 37+52= 51+16= 64+31= 85+11=
6
16+72= 21+52= 31+21= 61+17= 56+13= 52+42= 13+86= 22+64= 43+23= 13+83= 38+21= 63+13= 53+11= 33+66= 62+26= 14+82= 13+41= 51+32= 41+54= 21+46= 31+42= 54+13= 73+26= 46+33=
53+23= 42+54= 31+61= 25+34= 12+52= 74+22= 31+48= 41+33= 47+22= 43+46= 46+12= 21+75= 13+55= 37+61= 51+18= 53+25= 16+52= 16+63= 31+68= 11+87= 42+55= 77+12= 27+43= 44+55=
6.2:笔算两位数减两位数(不退位)的口算与笔算(110题)
67-36= 88-25= 99-87= 67-66= 97-75= 75-32= 67-36= 88-25= 99-87= 39-34= 67-11= 86-54= 98-55= 63-32= 75-25= 99-43= 24-14= 29-16= 29-15= 81-31= 77-71= 87-73=
24-22= 78-43= 36-25= 89-79= 26-13= 88-15= 25-24= 89-56= 77-65= 69-16= 99-16= 49-44= 91-51= 59-38= 79-17= 73-61= 58-35= 99-34= 87-46= 53-21= 91-61= 86-74=
35-12= 44-22= 92-91= 75-43= 39-11= 78-35= 89-28= 49-42= 93-72= 65-65= 33-31= 69-17= 59-48= 97-43= 79-35= 77-21= 24-23= 79-58= 56-44= 59-38= 59-19= 37-25=
7
98-26= 97-55= 69-25= 54-32= 79-73= 97-74= 67-53= 88-75= 47-11= 88-88= 94-24= 88-15= 37-25= 79-34= 96-54= 49-28= 38-37= 57-57= 93-43= 88-27= 55-14= 66-46=
45-33= 88-12= 69-29= 86-46= 38-17= 11-11= 51-31= 99-23= 87-55= 48-11= 85-23= 91-74= 36-11= 78-66= 39-35= 72-52= 99-55= 46-33= 39-18= 68-65= 74-41= 95-81=
6.3:笔算两位数加两位数(进位)(100题)
39+52= 11+79= 59+11= 57+36= 82+18= 35+58= 33+56= 39+51= 63+18= 47+16= 38+52= 29+61= 21+49= 78+16= 55+39= 34+58= 37+57= 17+46= 27+38= 64+18=
55+17= 77+28= 79+16= 16+86= 12+79= 39+43= 34+46= 79+13= 48+25= 49+73= 69+74= 36+27= 29+57= 55+36= 48+25= 63+27= 56+17= 23+49= 16+74= 73+18=
45+49= 73+17= 37+25= 16+48= 32+59= 58+13= 48+13= 12+69= 39+42= 26+27= 63+27= 75+15= 26+74= 39+49= 56+25= 39+28= 16+78= 13+58= 31+29= 57+19=
8
16+38= 39+28= 41+49= 35+17= 34+47= 49+42= 26+35= 78+14= 37+45= 58+27= 87+15= 73+17= 45+39= 73+18= 37+25= 16+48= 39+53= 28+63= 71+49= 64+26=
66+17= 37+14= 15+77= 55+17= 49+36= 79+16= 49+18= 23+67= 43+27= 19+49= 16+38= 48+45= 29+56= 14+46= 57+36= 58+28= 46+35= 14+47= 49+32= 46+28=
6.4:笔算两位数减两位数(退位)(120题)
81-35= 64-19= 35-28= 36-29= 31-26= 63-45= 55-28= 72-48= 52-44= 83-65= 61-58= 95-71= 91-12= 96-88= 64-25= 52-45= 83-69= 47-29= 95-87= 24-16= 66-37= 75-28= 72-24=
60-23= 85-39= 43-36= 38-19= 46-37= 95-47= 24-17= 91-45= 90-41= 80-53= 72-16= 45-27= 20-11= 92-69= 74-57= 30-26= 36-17= 94-23= 88-69= 85-77= 78-19= 80-36= 66-29=
73-65= 57-38= 82-34= 23-17= 34-18= 63-56= 68-49= 23-14= 70-34= 52-17= 22-13= 94-65= 54-27= 66-47= 42-26= 71-37= 95-46= 91-27= 94-89= 87-68= 92-14= 93-88= 94-55=
9
66-27= 66-57= 91-56= 85-17= 93-47= 96-69= 71-15= 87-58= 64-55= 74-15= 31-17= 87-68= 52-47= 75-67= 82-34= 92-89= 70-62= 95-26= 63-45= 93-66= 62-24= 65-38= 90-16=
70-53= 31-24= 51-24= 91-22= 92-55= 71-15= 96-48= 67-28= 88-29= 63-39= 95-87= 90-71= 70-56= 73-38= 90-14= 94-78= 94-27= 92-53= 30-27= 66-39= 46-17= 55-38= 63-26=
82-15= 51-48= 81-24= 64-16= 45-29=
10