Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
8 × 10 = ______
50 + 20 = ______
19 + 20 = ______
79 + 20 = ______
7 × 10 = ______
24 − 10 = ______
5 × 10 = ______
9 × 10 = ______
45 − 10 = ______
22 + 10 = ______
2 × 10 = ______
73 + 20 = ______
55 + 20 = ______
6 × 10 = ______
83 + 10 = ______
77 − 10 = ______
93 − 10 = ______
60 − 10 = ______
70 + 20 = ______
47 + 20 = ______
