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
87 − 10 = ______
21 + 20 = ______
85 − 10 = ______
44 + 20 = ______
46 + 20 = ______
75 + 10 = ______
58 + 20 = ______
1 × 10 = ______
28 − 10 = ______
29 − 10 = ______
41 + 10 = ______
2 × 10 = ______
69 − 10 = ______
7 × 10 = ______
25 − 10 = ______
74 + 20 = ______
8 × 10 = ______
65 − 10 = ______
5 × 10 = ______
40 + 10 = ______
