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
78 + 20 = ______
92 − 10 = ______
2 × 10 = ______
26 − 10 = ______
3 × 10 = ______
5 × 10 = ______
70 + 20 = ______
57 + 10 = ______
22 + 20 = ______
11 + 10 = ______
73 − 10 = ______
44 + 10 = ______
77 + 10 = ______
21 − 10 = ______
79 + 20 = ______
60 − 10 = ______
6 × 10 = ______
72 + 20 = ______
7 × 10 = ______
75 + 20 = ______
