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
84 + 20 = ______
8 × 10 = ______
56 − 10 = ______
33 − 10 = ______
27 + 10 = ______
49 + 20 = ______
38 + 10 = ______
20 + 10 = ______
50 − 10 = ______
60 + 20 = ______
34 + 20 = ______
26 + 20 = ______
9 × 10 = ______
37 + 10 = ______
99 − 10 = ______
74 − 10 = ______
70 − 10 = ______
60 − 10 = ______
27 − 10 = ______
4 × 10 = ______
