50 preguntas de aritmética verbal en el primer volumen de sexto grado

14-7,4=6,6, 1,92÷0,04=48, 0,32×500=160, 0,65+ 4,35= 5

10-5,4=4,6, 4÷20=0,2, 3,5×200=700, 1,5-0,06=1,44

0,75÷15=0,05, 0,4×0,8= 0,32, 4×0,25=1, 0,36+1,54=2

1,01×99=99,99, 420÷35=12, 25×12=300, 135÷0,5=270

3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4

1/ 6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4

3/10 +1/5 = 1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1,5

0,51÷17=0,03, 32,8+19=51,8, 5,2÷1,3= 4, 1,6×0,4= 0,64

4,9×0,7=3,43, 1÷5=0,2, 6÷12=0,5, 0,87-0,49=0,38