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
21 + 20 = ______
30 − 10 = ______
69 + 10 = ______
28 + 20 = ______
5 × 10 = ______
45 + 10 = ______
93 − 10 = ______
30 + 10 = ______
36 − 10 = ______
61 − 10 = ______
15 + 10 = ______
76 + 10 = ______
2 × 10 = ______
78 + 10 = ______
78 + 20 = ______
9 × 10 = ______
84 − 10 = ______
56 − 10 = ______
96 − 10 = ______
25 + 10 = ______
