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
45 + 20 = ______
33 + 10 = ______
76 + 20 = ______
1 × 10 = ______
4 × 10 = ______
25 − 10 = ______
7 × 10 = ______
36 − 10 = ______
86 − 10 = ______
51 + 10 = ______
84 + 20 = ______
8 × 10 = ______
78 − 10 = ______
40 + 10 = ______
6 × 10 = ______
71 − 10 = ______
62 + 20 = ______
73 + 20 = ______
76 − 10 = ______
16 + 10 = ______
