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
30 − 10 = ______
74 − 10 = ______
9 × 10 = ______
1 × 10 = ______
45 + 10 = ______
51 + 20 = ______
36 + 20 = ______
88 − 10 = ______
21 + 10 = ______
84 + 10 = ______
79 − 10 = ______
63 − 10 = ______
74 + 20 = ______
54 + 10 = ______
4 × 10 = ______
24 + 10 = ______
12 + 20 = ______
52 + 20 = ______
2 × 10 = ______
38 − 10 = ______
