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
85 + 20 = ______
53 − 10 = ______
2 × 10 = ______
30 + 20 = ______
11 + 20 = ______
3 × 10 = ______
84 − 10 = ______
88 − 10 = ______
70 + 10 = ______
28 − 10 = ______
13 + 10 = ______
50 + 20 = ______
65 − 10 = ______
43 + 10 = ______
78 + 10 = ______
36 − 10 = ______
13 + 20 = ______
31 − 10 = ______
12 + 20 = ______
77 + 20 = ______
