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
44 + 10 = ______
29 + 20 = ______
32 + 10 = ______
65 + 10 = ______
79 + 20 = ______
49 − 10 = ______
21 + 10 = ______
93 − 10 = ______
7 × 10 = ______
72 + 10 = ______
32 − 10 = ______
42 + 20 = ______
98 − 10 = ______
50 − 10 = ______
31 − 10 = ______
58 − 10 = ______
1 × 10 = ______
3 × 10 = ______
88 + 20 = ______
43 − 10 = ______
