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
29 + 20 = ______
79 + 20 = ______
5 × 10 = ______
42 − 10 = ______
56 + 20 = ______
74 + 20 = ______
75 − 10 = ______
8 × 10 = ______
48 + 20 = ______
90 − 10 = ______
83 + 10 = ______
78 − 10 = ______
74 − 10 = ______
7 × 10 = ______
98 − 10 = ______
9 × 10 = ______
30 + 10 = ______
37 + 20 = ______
1 × 10 = ______
54 + 10 = ______
