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
62 + 20 = ______
51 + 10 = ______
84 + 20 = ______
34 + 10 = ______
15 + 20 = ______
73 − 10 = ______
45 − 10 = ______
95 − 10 = ______
71 + 10 = ______
9 × 10 = ______
24 + 20 = ______
16 + 20 = ______
85 + 10 = ______
80 − 10 = ______
3 × 10 = ______
1 × 10 = ______
66 − 10 = ______
21 + 20 = ______
19 + 20 = ______
86 − 10 = ______
